# Elsevier

# European Journal of Operational Research

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**Current editor:**Jesus Artalejo

**Current editor:**Jean-Charles. Billaut

**Current editor:**Robert Dyson

**Current editor:**Lorenzo Peccati

**For corrections or technical questions regarding this series, please contact (Dana Niculescu)**

**Series handle:**repec:eee:ejores

**ISSN:**0377-2217

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### June 1999, Volume 115, Issue 3

**555-563 Efficiency estimation and error decomposition in the stochastic frontier model: A Monte Carlo analysis***by*Ruggiero, John**564-582 DEA-discriminant analysis in the view of goal programming***by*Sueyoshi, Toshiyuki**583-595 Side effects of absolute weight bounds in DEA models***by*Podinovski, V. V.**596-607 An enhanced DEA Russell graph efficiency measure***by*Pastor, J. T. & Ruiz, J. L. & Sirvent, I.**608-615 Qualitative company performance evaluation: Linear discriminant analysis and neural network models***by*Bertels, K. & Jacques, J. M. & Neuberg, L. & Gatot, L.**616-623 Measuring efficiency by a single price system***by*Ballestero, Enrique**624-633 A process for generating quantitative belief functions***by*Bryson, Noel (Kweku-Muata) & Mobolurin, Ayodele

### June 1999, Volume 115, Issue 2

**217-218 Editorial***by*Unknown**219-236 Integrated production/distribution planning in supply chains: An invited review***by*Erenguc, S. Selcuk & Simpson, N. C. & Vakharia, Asoo J.**237-253 Solving the medium newspaper production/distribution problem***by*Van Buer, Michael G. & Woodruff, David L. & Olson, Rick T.**254-269 An integrated inventory-transportation system with modified periodic policy for multiple products***by*Qu, Wendy W. & Bookbinder, James H. & Iyogun, Paul**270-284 Demand uncertainty and supplier's returns policies for a multi-store style-good retailer***by*Mantrala, Murali K. & Raman, Kalyan**285-299 Lagrangian-relaxation-based solution procedures for a multiproduct capacitated facility location problem with choice of facility type***by*Mazzola, Joseph B. & Neebe, Alan W.**300-313 Random lead times and expedited orders in (Q,r) inventory systems***by*Bookbinder, James H. & Cakanyildirim, Metin**314-327 Scheduling of resource tasks***by*Ecker, Klaus H.**328-338 Robustness of capacity rationing policies***by*Balakrishnan, Nagraj & Patterson, J. Wayne & Sridharan, V.**339-350 A combinatorial approach to the classification problem***by*Yanev, N. & Balev, S.**351-367 Making the information systems outsourcing decision: A transaction cost approach to analyzing outsourcing decision problems***by*Ngwenyama, Ojelanki K. & Bryson, Noel**368-379 Optimization models for recovery block schemes***by*Berman, Oded & Kumar, U. Dinesh**380-391 Minimising bins in transmission systems***by*Archibald, Thomas W. & Bokkers, Menno B. & Dekker, Rommert & Vliet, Andre van**392-412 Analysis of infinite servers polling systems with correlated input process and state dependent vacations***by*Lee, Thomas (Yew Sing)

### May 1999, Volume 115, Issue 1

**1-18 Optimization of a large-scale scallop hanging culture operation***by*Pelot, R. P. & Cyrus, J. P.**19-35 Analysis of the twisting department at Superior Cable Corporation: A case study***by*Yingling, Jon C. & Goh, Chon-Huat & Ganguli, Rajive**36-46 Analysis of capacity management of the intensive care unit in a hospital***by*Kim, Seung-Chul & Horowitz, Ira & Young, Karl K. & Buckley, Thomas A.**47-58 Strategic options in re-engineering of a manufacturing system with uncertain completion time***by*Liu, John & Yao, Dongqing**59-76 A modeling approach to logistics in concurrent engineering***by*Dowlatshahi, Shad**77-97 Concurrent optimization in designing for logistics support***by*Hatch, Melanie L. & Badinelli, Ralph D.**98-112 Multicriteria models for the allocation of design parameter targets***by*Plante, Robert D.**113-137 Design of electronic assembly lines: An analytical framework and its application***by*Ahmadi, Reza H. & Kouvelis, Panagiotis**138-157 Job challenge as a motivator in a principal-agent setting***by*Radhakrishnan, Suresh & Ronen, Joshua**158-172 Modeling simultaneous worker learning and forgetting in dual resource constrained systems***by*Kher, Hemant V. & Malhotra, Manoj K. & Philipoom, Patrick R. & Fry, Timothy D.**173-178 Single-machine scheduling with learning considerations***by*Biskup, Dirk**179-194 Evaluation of three production planning procedures for the use of recipe flexibility***by*Bertrand, J. W. M. & Rutten, W. G. M. M.**195-214 An investigation of lead-time effects in manufacturing/remanufacturing systems under simple PUSH and PULL control strategies***by*van der Laan, Erwin & Salomon, Marc & Dekker, Rommert

### May 1999, Volume 114, Issue 3

**447-464 A stochastic and dynamic model for the single-vehicle pick-up and delivery problem***by*Swihart, Michael R. & Papastavrou, Jason D.**465-473 Optimizing dead mileage in urban bus routes through a nondominated solution approach***by*Prakash, Satya & Balaji, B. V. & Tuteja, Deepak**474-488 An application of neurofuzzy modeling: The vehicle assignment problem***by*Vukadinovic, Katarina & Teodorovic, Dusan & Pavkovic, Goran**489-508 Submodularity and the traveling salesman problem***by*Herer, Yale T.**509-527 Weight distribution considerations in container loading***by*Davies, A. Paul & Bischoff, Eberhard E.**528-541 An exact algorithm for large multiple knapsack problems***by*Pisinger, David**542-556 An application of simulated annealing to the cutting stock problem***by*Faina, Loris**557-568 A sequential heuristic procedure for one-dimensional cutting***by*Gradisar, Miro & Kljajic, Miroljub & Resinovic, Gortan & Jesenko, Joze**569-579 An algorithm to perform a complete right-hand-side parametrical analysis for a 0-1-integer linear programming problem***by*Crema, Alejandro**580-588 Interactive fuzzy programming for multi-level 0-1 programming problems through genetic algorithms***by*Sakawa, Masatoshi & Nishizaki, Ichiro & Hitaka, Masatoshi**589-601 Optimization of neural networks: A comparative analysis of the genetic algorithm and simulated annealing***by*Sexton, Randall S. & Dorsey, Robert E. & Johnson, John D.**602-609 The sensitivity analysis of binary networks via simulation***by*Shih, Neng-Hui**610-625 A new analytical algorithm and generation of Gaussian quadrature formula for stochastic network***by*Fatemi Ghomi, S. M. T. & Hashemin, S. S.**626-637 Cognitive maps and fuzzy implications***by*Marchant, Thierry**638-656 CORO, a modeling and an algorithmic framework for oil supply, transformation and distribution optimization under uncertainty***by*Escudero, Laureano F. & Quintana, Francisco J. & Salmeron, Javier

### April 1999, Volume 114, Issue 2

**219-233 Heuristic algorithms for the portfolio selection problem with minimum transaction lots***by*Mansini, Renata & Speranza, Maria Grazia**234-248 Using data envelopment analysis for costing bank products***by*Soteriou, Andreas C. & Zenios, Stavros A.**249-262 The simulation of option prices with application to LIFFE options on futures***by*Christodoulakis, George A. & Satchell, Stephen E.**263-280 Business failure prediction using rough sets***by*Dimitras, A. I. & Slowinski, R. & Susmaga, R. & Zopounidis, C.**281-293 Evaluating predictive performance of judgemental extrapolations from simulated currency series***by*Pollock, Andrew C. & Macaulay, Alex & Onkal-Atay, Dilek & Wilkie-Thomson, Mary E.**294-303 Some basic problems in inventory theory: The financial perspective***by*Luciano, Elisa & Peccati, Lorenzo**304-319 Variance vs downside risk: Is there really that much difference?***by*Grootveld, Henk & Hallerbach, Winfried**320-329 Optimal exit and valuation under demand uncertainty: A real options approach***by*Alvarez, Luis H. R.**330-337 Coordination of pricing and multi-period production for constant priced goods***by*Gilbert, Stephen M.**338-345 Price subsidies and guaranteed buys of a new technology***by*Jorgensen, Steffen & Zaccour, Georges**346-353 Comparing performance of feedforward neural nets and K-means for cluster-based market segmentation***by*Hruschka, Harald & Natter, Martin**354-362 Automatic clustering of business processes in business systems planning***by*Lee, Hsuan-Shih**363-371 Location of hubs in a competitive environment***by*Marianov, Vladimir & Serra, Daniel & ReVelle, Charles**372-379 Location of an undesirable facility in a polygonal region with forbidden zones***by*Munoz-Perez, Jose & Saameno-Rodriguez, Juan Jose**380-388 A geometrical solution for quadratic bicriteria location models***by*Ohsawa, Yoshiaki**389-394 A maxmin policy for bond management***by*Ghezzi, Luca Luigi**395-402 The cutting stock problem with mixed objectives: Two heuristics based on dynamic programming***by*Antonio, Julien & Chauvet, Fabrice & Chu, Chengbin & Proth, Jean-Marie**403-410 Complexity of parallel machine scheduling with processing-plus-wait due dates to minimize maximum absolute lateness***by*Cheng, T. C. Edwin & Kovalyov, Mikhail Y.**411-419 Bounds for the position of the smallest job in completion time variance minimization***by*Manna, D. K. & Prasad, V. Rajendra**420-429 Two-machine flowshop scheduling with availability constraints***by*Lee, Chung-Yee**430-436 An algorithm of global optimization for solving layout problems***by*Feng, Enmin & Wang, Xilu & Wang, Xiumei & Teng, Hongfei**437-445 Fast collision detection in four-dimensional space***by*Aliyu, M. D. S. & Al-Sultan, K. S.

### April 1999, Volume 114, Issue 1

**1-14 Decision making using multiple models***by*Malhotra, Manoj K. & Sharma, Subhash & Nair, Satish S.**15-28 Multiple level production planning in rolling horizon assembly environments***by*Simpson, N. C.**29-37 On the global optimal solution to an integrated inventory system with general time varying demand, production and deterioration rates***by*Balkhi, Zaid T.**38-49 The multi-location inventory centralization problem with first-come, first-served allocation***by*Eynan, Amit**50-58 Balancing assembly lines effectively - A computational comparison***by*Scholl, Armin & Klein, Robert**59-71 Exploiting process plan flexibility in production scheduling: A multi-objective approach***by*Brandimarte, Paolo**72-82 A hierarchical approach for one-dimensional cutting stock problems in the steel industry that maximizes yield and minimizes overgrading***by*Vasko, Francis J. & Newhart, Dennis D. & Stott, Kenneth Jr.**83-92 A spreadsheet modelling approach to the assortment problem***by*Baker, Barrie M.**93-104 Capability indices for material balance accounting***by*Prasad, Sameer & Calis, Ayhan**105-114 Integer programming to schedule a hierarchical workforce with variable demands***by*Billionnet, Alain**115-126 Portfolio selection based on upper and lower exponential possibility distributions***by*Tanaka, Hideo & Guo, Peijun**127-140 Exact solution methods for uncapacitated location problems with convex transportation costs***by*Holmberg, Kaj**141-152 Genetic algorithm approach on multi-criteria minimum spanning tree problem***by*Zhou, Gengui & Gen, Mitsuo**153-164 Interval estimation of priorities in the AHP***by*Lipovetsky, Stan & Tishler, Asher**165-177 Lagrangean/surrogate relaxation for generalized assignment problems***by*Narciso, Marcelo G. & Lorena, Luiz Antonio N.**178-187 Technical efficiency and distance to a reverse convex set***by*Briec, W. & Lemaire, B.**188-197 The bilevel linear/linear fractional programming problem***by*Calvete, Herminia I. & Gale, Carmen**198-214 The finite criss-cross method for hyperbolic programming***by*Illes, Tibor & Szirmai, Akos & Terlaky, Tamas

### March 1999, Volume 113, Issue 3

**501-527 Social theory and system dynamics practice***by*Lane, David C.**528-543 A heuristic algorithm for the symmetric and asymmetric vehicle routing problems with backhauls***by*Toth, Paolo & Vigo, Daniele**544-559 An exact algorithm for the capacitated facility location problems with single sourcing***by*Holmberg, Kaj & Ronnqvist, Mikael & Yuan, Di**560-567 Ranking of generalised multi-stage KANBAN policies***by*Axsater, Sven & Rosling, Kaj**568-574 Lot sizing with quality improvement and setup time reduction***by*Voros, Jozsef**575-592 Scheduling of design projects with uncertain number of iterations***by*Luh, Peter B. & Liu, Feng & Moser, Bryan**593-609 Optimal fuzzy counterparts of scheduling rules***by*Ozelkan, Ertunga C. & Duckstein, Lucien**610-619 Optimal control for an MX/G/1 queue with two service modes***by*Nobel, Rein D. & Tijms, Henk C.**620-631 Approximation method for M/PH/1 retrial queues with phase type inter-retrial times***by*Diamond, Jeffrey E. & Alfa, Attahiru Sule**632-642 Adapting the Warmack-Gonzalez algorithm to handle discrete data***by*Rubin, Paul A.**643-652 Evaluation and refinement of aspiration-based methods in MCDM***by*Stewart, Theodor J.**653-675 Regular packing of congruent polygons on the rectangular sheet***by*Stoyan, Yu. G. & Pankratov, A. V.**676-687 O(n log n) procedures for tightening cover inequalities***by*Escudero, L. F. & Garin, A. & Perez, G.**688-699 Intervening duality and bargaining with a farmer-landowner example***by*Ryan, Michael J.

### March 1999, Volume 113, Issue 2

**235-699 Editorial***by*Unknown**236-246 Intelligent multicriteria decision support: Overview and perspectives***by*Siskos, Y. & Spyridakos, A.**247-260 Facilitators, decision makers, D.I.Y. users: Is intelligent multicriteria decision support for all feasible or desirable?***by*Belton, Valerie & Hodgkin, Julie**261-270 A DSS for multiple criteria decision analysis with imprecisely specified trade-offs***by*Podinovski, Victor V.**271-280 Solving multiple criteria choice problems by interactive trichotomy segmentation***by*Jaszkiewicz, A. & Ferhat, A. B.**281-299 Using artificial intelligence and visual techniques into preference disaggregation analysis: The MIIDAS system***by*Siskos, Y. & Spyridakos, A. & Yannacopoulos, D.**300-314 The `Light Beam Search' approach - an overview of methodology and applications***by*Jaszkiewicz, Andrzej & Slowinski, Roman**315-335 Decision Support Systems in action: Integrated application in a multicriteria decision aid process***by*Bana e Costa, Carlos A. & Ensslin, Leonardo & Correa, Emerson C. & Vansnick, Jean-Claude**336-354 MARKEX: An intelligent decision support system for product development decisions***by*Matsatsinis, Nikolaos F. & Siskos, Yannis**355-373 Interactive multicriteria procedure exploiting a knowledge-based module to select electricity production alternatives: The CASTART system***by*Gandibleux, Xavier**374-389 Multi-objective modeling for engineering applications: DIDASN++ system***by*Wierzbicki, Andrzej P. & Granat, Janusz**390-434 Deterministic job-shop scheduling: Past, present and future***by*Jain, A. S. & Meeran, S.**435-449 A bicriteria approach to the two-machine flow shop scheduling problem***by*Sayin, Serpil & Karabati, Selcuk**450-468 Sequencing and due-date determination in the stochastic single machine problem with earliness and tardiness costs***by*Soroush, H. M.**469-499 Guided local search and its application to the traveling salesman problem***by*Voudouris, Christos & Tsang, Edward

### February 1999, Volume 113, Issue 1

**1-16 Brand positioning under lexicographic choice rules***by*Bhadury, J. & Eiselt, H. A.**17-29 Multi-resource investment strategies: Operational hedging under demand uncertainty***by*Harrison, J. Michael & Van Mieghem, Jan A.**30-41 Can-order policies for coordinated inventory replenishment with Erlang distributed times between ordering***by*Schultz, Helle & Johansen, Soren Glud**42-51 Some stochastic inventory models with deterministic variable lead time***by*Hariga, Moncer & Ben-Daya, Mohamed**52-63 An (s,[punctuation space]S) random lifetime inventory model with a positive lead time***by*Liu, Liming & Yang, Tao**64-79 Stepwise decomposition approaches for large scale cell formation problems***by*Chen, Ja-Shen & Heragu, Sunderesh S.**80-90 A branch and bound based heuristic for multi-product resource constrained scheduling problem in FMS environment***by*Shanker, Kripa & Modi, Bimal K.**91-100 On the minimization of total weighted flow time with identical and uniform parallel machines***by*Azizoglu, Meral & Kirca, Omer**101-112 Stochastically minimizing total flowtime in flowshops with no waiting space***by*Allahverdi, Ali**113-122 Heuristics for scheduling in a flow shop with multiple processors***by*Brah, Shaukat A. & Loo, Luan Luan**123-136 Some new results on simulated annealing applied to the job shop scheduling problem***by*Kolonko, M.**137-146 A new approach for solving repair limit problems***by*Dagpunar, J. S.**147-168 Analysis of centroid aggregation for the Euclidean distance p-median problem***by*Zhao, Peiwu & Batta, Rajan**169-182 Simulation optimization with qualitative variables and structural model changes: A genetic algorithm approach***by*Azadivar, Farhad & Tompkins, George**183-192 Determination of the optimal externality: Efficiency versus equity***by*Romero, Carlos**193-205 Cooperative games with stochastic payoffs***by*Suijs, Jeroen & Borm, Peter & De Waegenaere, Anja & Tijs, Stef**206-214 Estimating returns to scale using non-parametric deterministic technologies: A new method based on goodness-of-fit***by*Kerstens, Kristiaan & Vanden Eeckaut, Philippe**215-231 On a 2-dimensional equipartition problem***by*Conti, Francesco & Malucelli, Federico & Nicoloso, Sara & Simeone, Bruno

### February 1999, Volume 112, Issue 3

**479-488 Multicriterion decision making in performance evaluation of an irrigation system***by*Raju, Komaragiri Srinivasa & Pillai, C. R. S.**489-502 Ship maintenance scheduling by genetic algorithm and constraint-based reasoning***by*Deris, Safaai & Omatu, Sigeru & Ohta, Hiroshi & Shaharudin Kutar, Lt. Cdr & Abd Samat, Pathiah**503-516 Extended optimal replacement model for deteriorating systems***by*Sheu, Shey-Huei**517-530 Sensitivity analysis of a railway station track layout with respect to a given timetable***by*Odijk, Michiel A.**531-541 Using the generalized assignment problem in scheduling the ROSAT space telescope***by*Nowakovski, Jorg & Schwarzler, Werner & Triesch, Eberhard**542-553 Evaluating the impact of operating conditions on the performance of appointment scheduling rules in service systems***by*Ho, Chrwan-Jyh & Lau, Hon-Shiang**554-569 Optimal warranties, reliabilities and prices for durable goods in an oligopoly***by*DeCroix, Gregory A.**570-581 A model for allocated versus actual costs in assignment and transportation problems***by*Pilot, Chris & Pilot, Steve**582-597 Travel time analysis for general item location assignment in a rectangular warehouse***by*Chew, Ek Peng & Tang, Loon Ching**598-612 Optimizing the natural gas supply mix of local distribution utilities***by*Guldmann, Jean-Michel & Wang, Fahui**613-619 Optimization models for quality and cost of modular software systems***by*Jung, Ho-Won & Choi, Byoungju**620-634 Clusters in a group: Decision making in the vector space formulation of the analytic hierarchy process***by*Zahir, Sajjad**635-645 Bandwidth packing with queuing delay costs: Bounding and heuristic solution procedures***by*Amiri, Ali & Rolland, Erik & Barkhi, Reza**646-653 Sojourn times in a random queue with and without preemption***by*Field, A. J. & Harrison, P. G.**654-663 Tighter relaxations for the cutting stock problem***by*Nitsche, Christoph & Scheithauer, Guntram & Terno, Johannes**664-672 A new upper bound for the 0-1 quadratic knapsack problem***by*Billionnet, Alain & Faye, Alain & Soutif, Eric**673-681 Implied constraints and LP duals of general nonlinear programming problems***by*Johri, Pravin K.**682-691 Fuzzy MCDM based on ideal and anti-ideal concepts***by*Liang, Gin-Shuh**692-695 A note on rough sets and common knowledge events***by*Salonen, Hannu & Nurmi, Hannu

### January 1999, Volume 112, Issue 2

**249-257 Multicriterion decision making in river basin planning and development***by*Raju, Komaragiri Srinivasa & Pillai, C. R. S.**258-272 Layout designs in cellular manufacturing***by*Bazargan-Lari, Massoud**273-283 Reserve design for species preservation***by*Clemens, Michael A. & S. ReVelle, Charles & C. Williams, Justin**284-303 Operations planning for a multi-stage kanban system***by*Sarker, Bhaba R. & Balan, Chidambaram V.**304-309 Stochastically minimizing the makespan in two-machine flow shops without blocking***by*Kamburowski, Jerzy**310-321 Financial credit-risk evaluation with neural and neurofuzzy systems***by*Piramuthu, Selwyn**322-346 Computing lower bounds by destructive improvement: An application to resource-constrained project scheduling***by*Klein, Robert & Scholl, Armin**347-366 The multiple resource constrained project scheduling problem: A breadth-first approach***by*Nazareth, Terence & Verma, Sanjay & Bhattacharya, Subir & Bagchi, Amitava**367-372 Transitive calibration of the AHP verbal scale***by*Finan, J. S. & Hurley, W. J.**373-396 Geometry of decision making and the vector space formulation of the analytic hierarchy process***by*Zahir, Sajjad**397-404 A subjective and objective integrated approach to determine attribute weights***by*Ma, Jian & Fan, Zhi-Ping & Huang, Li-Hua**405-412 Robust and neutral methods for aggregating preferences into an outranking relation***by*Vincke, Ph.**413-420 An improved BL-algorithm for genetic algorithm of the orthogonal packing of rectangles***by*Liu, Dequan & Teng, Hongfei**421-426 On the inverse problem of linear programming and its application to minimum weight perfect k-matching***by*Huang, Siming & Liu, Zhenhong**427-431 A note on efficient solutions for the linear bilevel programming problem***by*Soismaa, Margareta**432-459 Gradient projection and local region search for multiobjective optimisation***by*Yang, Jian-Bo**460-466 A decomposition approach for the fuel-constrained economic power-dispatch problem***by*Takriti, Samer & Krasenbrink, Benedikt**467-471 Graphical solution of (nxm) matrix of a game theory***by*Kumar, Sanjay & Reddy, D. S. N.**472-478 Solution of 3 x 3 games using graphical method***by*Nair, K. G. K. & Ranjith, G.

### January 1999, Volume 112, Issue 1

**1-478 Editorial***by*Unknown**3-41 Resource-constrained project scheduling: Notation, classification, models, and methods***by*Brucker, Peter & Drexl, Andreas & Mohring, Rolf & Neumann, Klaus & Pesch, Erwin**42-53 Improving the efficiency of the purchasing process using total cost of ownership information: The case of heating electrodes at Cockerill Sambre S.A***by*Degraeve, Zeger & Roodhooft, Filip**54-80 Formulating and solving production planning problems***by*LeBlanc, Larry J. & Shtub, Avraham & Anandalingam, G.**81-97 Match-up scheduling under a machine breakdown***by*Akturk, M. Selim & Gorgulu, Elif**98-106 Measuring and designing flexibility as a generalized service degree***by*Schneeweiss, Ch. & Schneider, H.**107-121 An approximation for computing the throughput of closed assembly-type queueing networks***by*Ayhan, Hayriye & Wortman, Martin A.**122-133 The general routing polyhedron: A unifying framework***by*Letchford, Adam N.**134-146 The asymmetric travelling salesman problem and a reformulation of the Miller-Tucker-Zemlin constraints***by*Gouveia, Luis & Pires, Jose Manuel**147-157 A simulated annealing algorithm with the random compound move for the sequential partitioning problem of directed acyclic graphs***by*Kaji, Taichi & Ohuchi, Azuma**158-166 Approximation algorithms for the oriented two-dimensional bin packing problem***by*Lodi, Andrea & Martello, Silvano & Vigo, Daniele**167-173 Multiple bottleneck assignment problem***by*Aneja, Y. P. & Punnen, A. P.**174-186 Optimization of dual response systems: A comprehensive procedure for degenerate and nondegenerate problems***by*Del Castillo, Enrique & Fan, Shu-Kai & Semple, John**187-195 Average-discounted equilibria in stochastic games***by*Flesch, J. & Thuijsman, F. & Vrieze, O. J.**196-206 Product form stationary distributions for the MGk group-arrival group-departure loss system under a general acceptance policy***by*Economou, A. & Fakinos, D.**207-219 Development of a Neuro-Fuzzy approach for treating multimodal distributions and spurious clusters***by*Pauler, Gabor**220-235 Decision making under partial probability information using pair-wise comparisons***by*Parkan, Celik & Wang, Lian-Fen & Wu, Ming-Lu**236-239 A note on the kinks at the mean variance frontier***by*Voros, J. & Kriens, J. & Strijbosch, L. W. G.**240-244 A note on robustness of the efficient DMUs in data envelopment analysis***by*Boljuncic, Valter

### December 1998, Volume 111, Issue 3

**423-447 Strategic facility location: A review***by*Owen, Susan Hesse & Daskin, Mark S.**448-460 Model tightening for integrated timber harvest and transportation planning***by*Guignard, Monique & Ryu, Choonho & Spielberg, Kurt**461-469 Non-discretionary inputs in data envelopment analysis***by*Ruggiero, John**470-478 DEA and the discriminant analysis of ratios for ranking units***by*Sinuany-Stern, Zilla & Friedman, Lea**479-494 Multi-depot vehicle scheduling problems with time windows and waiting costs***by*Desaulniers, Guy & Lavigne, June & Soumis, Francois**495-508 A utility measure for finding multiobjective shortest paths in urban multimodal transportation networks***by*Modesti, Paola & Sciomachen, Anna**509-517 An iterative improvement approach for the nonpreemptive open shop scheduling problem***by*Liaw, Ching-Fang