## Content

### 1994

**1994056 Stable Trading Structures in Bilateral Oligopolies***by*BLOCH, Francis & GHOSAL, Sayantan**1994055 Evolution with State-Dependent Mutations***by*BERGIN, James & LIPMAN, Bart**1994054 Cost and Efficiency of Major Urban Transit Systems in Europe***by*WUNSCH , Pierre**1994053 The Node Capacitated Graph Partitioning Problem : A Computational Study***by*FERREIRA, Carlos E. & de SOUZA, Cid C. & MARTIN, Alexander & WEISMANTEL, Robert**1994052 Education Subsidies and Endogenous Growth : Implications of Demographic Shocks***by*DOCQUIER, Frédéric & MICHEL, Philippe**1994051 Noise vs Inefficiency. Evidence from Mass Transit***by*VANDEN EECKAUT, Philippe & WUNSCH, Pierre**1994050 Real Wages, Skill Mismatch and Unemployment Persistence***by*SNEESSENS, Henri R. & SHADMAN-MEHTA, Fatemeh**1994049 Fiscal Policy in a Growth Model with Both Altruistic and Non Altruistic Agents***by*MICHEL, Philippe & PESTIEAU , Pierre**1994048 A Core-Theoretic Solution for the Design of Cooperative Agreements on Transfrontier Pollution***by*CHANDER, Parkash & TULKENS, Henry**1994047 Nonparametric Approaches to the Assessment of the Relative Efficiency of Bank Branches***by*TULKENS, Henry & MALNERO, Amador**1994046 A Few Remarks on Imperfect Competition with Incompleteness of Markets***by*VENTURA , Luigi**1994045 Ausi Expected Utility : An Anticipated Utility Theory of Relative Disappointment Aversion***by*GRANT, Simon & KAJII, Atsushi**1994044 Self-Fulfilling Mechanisms and Rational Expectations***by*FORGES, Françoise & MINELLI , Enrico**1994043 State Dependent Utility***by*RUSTICHINI, Aldo & DREZE, Jacques H.**1994042 "Nice" Trivial Equilibria in Strategic Market Games : A Comment on Dubey-Shubik (1978)***by*CORDELLA , Tito & GABSZEWICZ , Jean J.**1994041 Pitfalls of Normal-Gamma Stochastic Frontier Models***by*RITTER, Christian & SIMAR, Leopold**1994040 The Profit-Maximizing Weber Problem***by*HANSEN, Pierre & PEETERS, Dominique & THISSE, Jacques-François**1994039 Price Discrimination with Costly Consumer Arbitrage***by*ANDERSON, Simon P. & GINSBURGH , Victor A.**1994038 Do Art Experts make Rational Estimates of Pre-Sale Prices ?***by*BAUWENS, Luc & GINSBURGH, Victor A.**1994037 Formulations and Valid Inequalities for the Node Capacitated Graph Partitioning Problem***by*FERREIRA, Carlos E. & MARTIN, Alexander & de SOUZA, Cid C. & WEISMANTEL, Robert**1994036 Technical Development, Competition from Low-Wage Economies and Low-Skilled Unemployment***by*DREZE, Jacques H. & SNEESSENS, Henri**1994035 Pigovian Taxes, Tradable Permits and a Dynamic Process for an Economy with Pollution***by*de SOUSA RAMOS , Francisco**1994034 Oligopolistic Competition and the Optimal Provision of Products***by*ANDERSON, Simon P. & DE PALMA, André & NESTEROV, Yurii**1994033 The Nature of Two-Direction Intergenerational Transfers of Money and Time : An Empirical Analysis***by*IOANNIDES , Yannis & KAN , Kamhon**1994032 Structural Estimation of Residential Mobility and Housing Tenure Choice***by*IOANNIDES, Yannis & KAN, Kamhon**1994031 Optimal Licensing in a Spatial Model***by*CABALLERO-SANZ, Francisco & MONER-COLONQUES, Rafael & SEMPERE-MONERRIS, J.J.**1994030 Existence and Efficiency Properties of an Approximate Equilibrium when Asset Markets are Incomplete : A Welfare Approach***by*GINSBURGH, Victor & KEYZER, Michiel**1994029 Prices, Asset Markets and Indeterminacy***by*POLEMARCHAKIS, Heracles & SICONOLFI , Paolo**1994028 Two-Sided Search, Marriages and Matchmakers***by*BLOCH, Francis & RYDER, Harl**1994027 Algorithms and Reformulations for Lot Sizing Problems***by*POCHET, Yves & WOLSEY , Laurence**1994026 Optimal Trees***by*MAGNANTI, Thomas & WOLSEY, Laurence**1994025 Strategic Intergenerational Bequests with Stochastic Convex Production***by*AMIR , Rabah**1994024 Stackelberg vs. Cournot / Bertrand Equilibrium***by*AMIR, Rabah & GRILO, Isabel**1994023 Radial and Nonradial Technical Efficiency Measures on a DEA Reference Technology : A Comparison using US Banking Data***by*FERRIER, Gary & KERSTENS, Kris & VANDEN EECKAUT, Philippe**1994022 Repeated Games. Part C : Further Developments***by*MERTENS, Jean-François & SORIN , Sylvain & ZAMIR , Shmuel**1994021 Repeated Games. Part B : The Central Results***by*MERTENS , Jean-François & SORIN , Sylvain & ZAMIR , Shmuel**1994020 Repeated Games. Part A : Background Material***by*MERTENS , Jean-François & SORIN , Sylvain & ZAMIR , Shmuel**1994019 An Exact Algorithm for IP Column Generation***by*VANDERBECK, François & WOLSEY, Laurence**1994018 Identification Restrictions and Posterior Densities in Cointegrated Gaussian VAR Systems***by*BAUWENS, Luc & LUBRANO , Michel**1994017 Hidden Information Acquisition and Static Choice***by*VAN ZANDT , Timothy**1994016 The Penalty for Tax Evasion when Taxes are set Optimally***by*PESTIEAU, Pierre & POSSEN, Uri & SLUTSKY, Steven**1994015 Tougher Price-Competition or Lower Concentration : A Trade-Off for Antitrust Authorities ?***by*d ASPREMONT , Claude & MOTTA , Massimo**1994014 A Note on Affine Aggregation***by*DE MEYER, Bernard & MONGIN , Philippe**1994013 Cournot Oligopoly and the Theory of Supermodular Games***by*AMIR, Rabah**1994012 Quality Regulation in the Monopoly Case : The Impact of Information***by*Beitia , A.**1994011 Deriving Correlated Equilibrium as the Stable Standard of behavior of a Social Situation : A Note***by*RAY, Indrajit**1994010 Time-Consistent Criminal Sanctions***by*BOADWAY, Robin & MARCEAU, Nicolas & MARCHAND, Maurice**1994009 Dynamic Capital Interactions, Externalities and Trade***by*Datta, M. & Mirman, L.**1994008 On the Role of Paper Money in General Equilibrium Model without Transactions Costs***by*KAJII, Atsushi**1994007 Another Look at the American Electrical Utility Data***by*RITTER, Christian & SIMAR, Léopold**1994006 Externalities and Price Dynamics***by*DATTA, Manjira**1994005 On the Logic of Common Belief and Common Knowledge***by*LISMONT, Luc & MONGIN, Philippe**1994004 Unawareness : A Formal Theory of Unforeseen Contingencies. Part II***by*MODICA, Salvatore & RUSTICHINI, Aldo**1994003 A Method of Estimating the Average Derivative***by*BANERJEE , Anurag N.**1994002 Alternative Notions of Knowledge***by*MORRIS , Stephen**1994001 A Nonadditive Probability Model of Individual Choice***by*BILLOT, Antoine & THISSE, Jacques-François

### 1993

**1993057 Stochastic Frontiers : A Semiparametric Approach***by*PARK, Byeong & SICKLES, Robin & SIMAR, Léopold**1993056 Tariff Policy and Multinational Firms : How to Jump Tariff Jumping***by*CORDELLA, Tito & VANNINI, Stefano**1993055 Generic Existence of Competitive Equilibria when the Asset Market is Incomplete : A Symmetric Argument***by*POLEMARCHAKIS, Heracles & SICONOLFI, Paolo**1993054 Knowledge at Equilibrium***by*MINELLI, Enrico & POLEMARCHAKIS, Heracles**1993053 Coalition-Proof Correlated Equilibrium : A Definition***by*RAY , Indrajit**1993052 Signal Extraction in Presence of Infrequent Shocks***by*BIANCHI , Marco**1993051 Infrequent Shocks in the US Nominal Wage Series***by*BIANCHI, Marco**1993050 Segmented Regressions and Causality (with applications to macroeconomic time series)***by*BIANCHI , Marco**1993049 A Tactical Planning Model for Mixed-Model Electronics Assembly Operations***by*BALAKRISHNAN, Anantaram & VANDERBECK, François**1993048 Relative Utilitarianism***by*DHILLON, Amrita & MERTENS, Jean-François**1993047 The Formulation of Uncertainty : Prices and States***by*DREZE , Jacques H.**1993046 A Non-Minimal but Very Weak Axiomatization of Common Belief***by*MONGIN , Philippe**1993045 Profile Methods***by*RITTER, Christian & BATES, Douglas M.**1993044 Stability in Generalised Assignment Models : Some Concepts and an Application to Technology Transfer***by*CHAUDHURI, Prabal Ray**1993043 A Note on Pareto Optimality in Differential Information Economies***by*FORGES , Françoise**1993042 Markets, Arbitrage and Social Choices***by*CHICHILNISKY , Graciela**1993041 Bequests as a heir : "Discipline device"***by*CREMER, Helmuth & PESTIAU, Pierre**1993040 Location on Networks***by*LABBE, Martine & PEETERS, Dominique & THISSE, Jacques-François**1993039 Belief Closure : A Semantics of Common Knowledge for Modal Propositional Logic***by*LISMONT, Luc & MONGIN, Philippe**1993038 A Cutting Plane Approach to Capacitated Lost-Sizing with Start-Up Costs***by*CONSTANTINO , Miguel**1993037 Regions of Europe : A Feasible Status, to be discussed***by*DREZE , Jacques H.**1993036 Unawareness : A Formal Theory of Unforeseen Contingencies. Part I***by*MODICA, Salvatore & RUSTICHINI, Aldo**1993035 Delegation in a Vertically Differentiated Duopoly***by*BARROS, Fatima & GRILO, Isabel**1993034 Equilibrium with Incomplete Financial Markets : Uniqueness of Equilibrium Expectations and Real Indeterminacy***by*PIETRA, Tito & SICONOLFI, Paolo**1993033 Trade and Welfare***by*CORDELLA, Tito & MINELLI, Enrico & POLEMARCHAKIS, Heracles**1993032 Diverging Patterns in a Two Country Model with Endogenous Labor Migration***by*REICHLIN, Pietro & RUSTICHINI, Aldo**1993031 Testing for Continuous-Time Models of the Short-Term Interest Rate***by*BROZE, Laurence & SCAILLET, Olivier & ZAKOIAN , Jean-Michel**1993030 Liquidity and Financial Intermediation***by*DUTTA, Jayasri & KAPUR, Sandeep**1993029 On Asymptotically Exact Testing of Nonparametric Hypotheses***by*LEPSKII , Oleg V.**1993028 The Value of Failure***by*Haller, Hh. & Pavlopoulos, A.**1993027 Model Selection and Variable Transformations in Nonlinear Regression***by*BUNKE, Olaf & DROGE, Bernd & POLZEHL, Jörg**1993026 Learning by Observation within the Firm***by*DUTTA, Jayasri & PRASAD, Kislaya**1993025 A Bootstrap Test for Single Index Models***by*HÄRDLE, Wolfgang & DIAS PROENCA, sabel M.**1993024 Reparameterization and Estimation in Unit Root Equations***by*VAN HOA , Tran**1993023 Capacitated Facility Location : Valid Inequalities and Facets***by*AARDAL, Karen & POCHET, Yves & WOLSEY, Laurence A.**1993022 Non-Cooperative Implementation in an Assignment Model***by*CHAUDHURI , Prabal R.**1993021 Optimal Taxation and Provision of Public Goods with Non Linear Income and Linear Commodity Taxes in a Two Class Economy***by*NAVA , Mario & MARCHAND , Maurice & SCHROYEN, Fred**1993020 Projection Pursuit Discriminant Analysis***by*POLZEHL , Jörg**1993019 Consistent Bayesian Aggregation***by*MONGIN, Philippe**1993018 Examining the Economic / Econometric Relevance of Discretizing Panel Data : An Application to the Belgian Labour Market***by*Cahuzac, E. & Mouchart, M. & Van Der Linden, B.**1993017 Learning about Variable Demand in the Long Run***by*RUSTICHINI, Aldo & WOLINSKY , Asher**1993016 Non-Parametric Efficiency, Progress and Regress Measures for Panel Data : Methodological Aspects***by*TULKENS, Henry & VANDEN EECKAUT, Philippe**1993015 Optimal Dimensioning of Pipe Networks with Application to Gas Transmission Networks***by*DE WOLF, Daniel & SMEERS, Yves**1993014 Efficient Estimation of Average Derivative***by*IBRAGIMOV , Ildar A.**1993013 Covariance Estimators and Adjusted Pseudo Maximum Likelihood Method***by*BROZE, Laurence & GOURIEROUX , Christian**1993012 Stationary Temporary Equilibrium in a Model of Trade and Optimal Accumulation***by*DATTA , Manjira**1993011 Optimal intergenerational transfers in an endogenous growth model with fertility change***by*MARCHAND, Maurice & MICHEL, Philippe & PESTIEAU, Pierre**1993010 Polyhedra for Lot-Sizing with Wagner-Whitin Costs***by*POCHET, Yves & WOLSEY, Laurence A.**1993009 Five Legitimate Definitions of Correlated Equilibrium in Games with Incomplete Information***by*FORGES , Françoise**1993008 Moral Hazard in Teams and Repeated Partnership : The Role of Information Quality***by*d ASPREMONT, Claude & GERARD-VARET, Louis-André**1993007 Comparative Advantage under Oligopoly***by*CORDELLA, Tito & GABSZEWICZ, Jean**1993006 An Exact Algorithm for Maximum Entropy Sampling***by*KO, Chun-Wa & LEE, Jon & QUEYRANNE, Maurice**1993005 On the Performance of the H-H Test***by*PROENCA , Isabelle**1993004 The Provision of Information on a Market with Vertically Differentiated Goods***by*SEVY , David**1993003 Repeated Games and the Central Limit Theorem***by*DE MEYER , Bernard**1993002 On the Relationship between Mutation Rates and Growth Rates in a Changing Environment***by*PORATH, Elchanan Ben & DEKEL, Eddie & RUSTICHINI, Aldo**1993001 Cournot-Walras and Cournot Equilibria in Mixed Markets : A Comparison***by*CODOGNATO , Giulio

### 1992

**1992063 '1 Market + 1 (Tight) Money = 2 Rules of Fiscal Discipline' : Europe's Fiscal Stance deserves Another Look***by*DREZE , Jacques H.**1992062 The Volume of the Relaxed Boolean Quadric Polytope***by*KO, Chun-Wa & LEE, Jon & STEINGRIMSSON, Einar**1992061 Mixed Duopoly under Vertical Differentiation: a Stackelberg-Nash-Cournot equilibrium model***by*GRILO, Isabel**1992060 A Parallel Block Cholesky Factorization for Staircase Linear Programming Problems***by*LOUTE, Etienne & VIAL, Jean-Philippe**1992059 On the Distribution of Jumps of the Dirichlet Process***by*ROLIN , Jean-Marie**1992058 A Stochastic Version of a Stackelberg-Nash-Cournot Equilibrium Model***by*DE WOLF, Daniel & SMEERS, Yves**1992057 General equilibrium concepts under imperfect competition: a Cournotion approach***by*D'ASPREMONT, Claude & DOS SANTOS, R. & GÉRARD-VARET, Louis-André**1992056 Non Linear ARX-Models : Probabilistic Properties and Consistent Recursive Estimation***by*Doukhan, P. & Tsybakov, A.**1992055 A New Approach to Minimising the Frontwidth in Finite Element Calculations***by*DE SOUZA, CC. & KEUNINGS, R. & WOLSEY, laurence & ZONE, O.**1992054 Estimating the Time-of-Day Electricity Demand by Using the Constrained Smoothing Spline Estimator***by*RODRIGUEZ-POO , Juan M.**1992053 A Note on Redistributions and Gains from Trade***by*CORDELLA, Tito & VENTURA, Luigi**1992052 Estimating End-Use Demand : A Bayesian Approach***by*BAUWENS, Luc & FIEBIG, Denzil & STEEL, Mark**1992051 Patterns of trade and oligopoly equilibria: an example***by*CORDELLA, Tito**1992050 Optimizing constrained subtrees of trees***by*AGHEZZAF, El Houssaine & MAGNANTI, Thomas & WOLSEY, Laurence**1992049 Minimax linewise algorithm for image reconstruction***by*Korostelev, A. & Tsybakov, A.**1992048 Some connections between epistemic logic and the theory of nonadditive probability***by*MONGIN, Philippe**1992047 Oligopoly equilibria in exchange economies***by*GABSZEWICZ, Jean & MICHEL, Philippe**1992046 Probabilistic voting and platform selection in multi-party elections***by*ANDERSON, S.P. & KATZ, A. & THISSE, Jacques-François**1992045 Efficiency wages and underemployment in the long run***by*DUTTA, Jayasri**1992044 Monotonicity and the fair assignment solution***by*ALKAN, Ahmet**1992043 Technological linkages and efficient location of indivisible activities: Koopmans-Beckmann and Von Thünen unified***by*FUJITA, Masahisa & THISSE, Jacques-François**1992042 The acid rain game as a resource allocation process with an application to the cooperation among Finland, Russia, and Estonia***by*KAITALA, Veijo & MÄLER, Karl & TULKENS, Henry**1992041 Numerical experiments with the symmetric affine scaling algorithm on degenerate linear programming problems***by*AMAYA, Jorge**1992040 Volunteer work and club size: Nash equilibrium and optimality***by*BARHAM, Vicky & BOADWAY, Robin & MARCHAND, Maurice & PESTIEAU, Pierre**1992039 Perfect correlated equilibria***by*DHILLON, Amrita & MERTENS, Jean-François**1992038 Approximate HPD regions for testing residual autocorrelation using augmented regressions***by*BAUWENS, Luc & RASQUERO, A.**1992037 Nonparametric approaches to generalized linear models***by*HÄRDLE, Wolfgang & TURLACH, Berwin**1992036 Incentive schemes as strategic variables: an application to a mixed duopoly***by*BARROS, Fatima**1992035 Commodity taxation in a differentiated oligopoly***by*CREMER, Helmut & THISSE, Jacques-François**1992034 The private provision of public good in the case of satiation points: The case of a quasi-linear economy***by*Trannoy, A. & Caralp, B. & Prigent, J.L. & Richelle, Y.**1992033 Constrained nonparametric regression***by*RODRIGUEZ-POO, Juan**1992032 On direction methods for average derivative estimation***by*TURLACH, Barwin**1992031 Competitive spatial price discrimination with capacity constraints***by*HAMILTON, Jonathan & THISSE , Jacques-François**1992030 A cross-validatory choice of smoothing parameter in adaptive location estimation***by*PARK, Byeong**1992029 Estimation of support of a probability density and estimation of support functionals***by*Korostelev, A.P. & Tsybakov , A.B.**1992028 Three results on communication, information and common knowledge***by*WEYERS , Sonia**1992027 Red wines of Médoc: What is wine testing worth ?***by*GINSBURGH, Victor & MONZAK, M.**1992026 Towards a theory of the direct-indirect tax mix***by*BOADWAY, Robin & MARCHAND, Maurice & PESTIEAU, Pierre**1992025 On estimating integrated squared spectral density derivatives***by*LEE, Y.H. & CHO, S. & KIM, W.C. & PARK, Byeong**1992024 Testing increasing dispersion***by*HÄRDLE, Wolfgang & PARK, Byeong**1992023 Horizontal mergers revisited: an application of the hybrid equilibrium***by*ZHAO, Jingang**1992022 Delegation under assymetric information***by*ROVESTI, Cinzia**1992021 Incentives in market games with asymmetric information: The core***by*ALLEN, Beth**1992020 Bayesian testing and testing Bayesians***by*FLORENS, Jean-Pierre & MOUCHART, Michel**1992019 Local bipartite Turan graph partitioning***by*RYAN, Jennifer & LEE, Jon**1992018 Integer knapsack and flow covers with divisible coefficients polyhedra, optimization and separation***by*POCHET, Yves & WOLSEY, Laurence**1992017 Asymmetric adjustment costs in non-linear labour demand models for the Netherlands and UK manufacturing sectors***by*PFANN, Gerard & PALM, Franz**1992016 Geometric comparison of combinatorial polytopes***by*LEE, Jon & MORRIS, Walter**1992015 Effects of impefect competition on contractual design in the presence of private information***by*BARROS, Fatima**1992014 Behavior of kernel density estimates and bandwidth selectors for contaminated data sets***by*MAMMENS, Enno & PARK, Byeong**1992013 Efficient semiparametric estimation in stochastic frontier model***by*PARK, Byeong & SIMAR, Léopold**1992012 Second-best insurance contract design in an incomplete market***by*GOLLIER, Christian & SCHLESINGER, Harris**1992011 The generic existence of competitive equilibria with restricted participation***by*POLEMARCHAKIS, Heracles & SICONOLFI, Paolo**1992010 Education and the poverty trap***by*BARHAM, Vicky & BOADWAY, Robin & MARCHAND, Maurice & PESTIEAU, Pierre**1992009 More facets from fences for linear ordering and acyclic subgraph polytopes***by*LEUNG, Janny & LEE, Jon**1992008 Two examples on strategic equilibrium***by*MERTENS, Jean-François**1992007 Some useful properties of the Dirichlet process***by*ROLIN, Jean-Marie**1992006 Can varying social insurance contributions improve labour market efficiency ?***by*DREZE, Jacques**1992005 Practical performance of several data driven bandwidth selectors***by*PARK, Byeong & TURLACH, Berwin**1992004 Stability and the chain store paradox***by*GOVINDAN, Srihari**1992003 Applied nonparametric methods***by*HÄRDLE, Wolfgang**1992002 National R&D cooperation: A special type of strategic policy***by*MOTTA, Massimo**1992001 Bubbles slowing down economic growth***by*MICHEL, Philippe

### 1991

**1991060 On Stochastic Approximation with Arbitrarily Dependent Noise***by*Polyak, B. & Tsybakov, A.**1991059 An Exact Formula for the Lion's Share : a Model of Pre-Play Negotiation***by*Bensaid, B. & Gary-Bobo, R.**1991058 A Study of Cost-Efficiency and Returns to Scale for 235 Municipalities in Belgium***by*Vanden Eeckaut, Ph. & Tulkens, H. & Jamar, M-A.**1991057 Some New Classes of Facets for the Equicut Polytope***by*De Souza, C. & Laurent, M.**1991056 Better Bootstrap Confidence Intervals for Regression Curve Estimation***by*Hardle, W. & Huet, S. & Jolivet, E.**1991055 Non-frontier measures of efficiency, progress and regress***by*Tulkens, H. & Vanden Eeckaut, Ph.**1991054 Asymptotically Best Bandwidth Selectors in Kernel Density Estimation***by*Park, B. & Kim, W. & Marron, J.**1991053 Correlated equilibrium and sunspot equilibrium***by*Forges, F.**1991052 Endogenous quality and coordination of decisions***by*Motta, M.**1991051 Quality choice and Cournot competition: minimum differentiation revisited***by*Motta, M.**1991050 International trade and investments in a vertically differentiated industry***by*Motta, M.**1991049 Bandwidth choice for average derivative estimation***by*Hardle, W. & Hart, J. & Marron, J. & Tsybakov, A.**1991048 Efficient constraints on foreign borrowing in a model of endogenous growth***by*Chamley, C.**1991047 Mechanism design: durability and efficiency of a decision rule***by*Rovesti, C.**1991046 Trade liberalization: consumers gains and losses***by*Cordella, T.**1991045 Posterior efficiency***by*Forges, F.**1991044 How sensitive are average derivates ?***by*Hardle, W. & Tsybakov, A.**1991043 Fast and simple scatterplot smoothing***by*Hardle, W. & Marron, A.**1991042 The Malmquist productivity index and the circular test***by*Fare, r.**1991041 Optimal expansion of capacitated transshipment networks***by*Ahuja, R. & Batra, S. & Gupta, S. & Punnen, A.**1991040 On an efficient smoothing parameter selector proposed by Hall and Johnstone***by*Hardle, W. & Park, B.**1991039 On the choice of Kernel regression estimators : a discussion***by*Grund, B. & Hardle, W.**1991038 Investment in local public services : Nash equilibrium and social optimum***by*Cremer, H. & Marchand, M. & Pestieau, P.**1991037 Lot-sizing with constant batches: formulation and valid inequalities***by*Pochet, Y. & Wolsey, L.