IDEAS home Printed from https://ideas.repec.org/a/eee/wdevel/v96y2017icp294-314.html
   My bibliography  Save this article

Decoupling Standards from Practice: The Impact of In-House Certifications on Coffee Farms’ Environmental and Social Conduct

Author

Listed:
  • Giuliani, Elisa
  • Ciravegna, Luciano
  • Vezzulli, Andrea
  • Kilian, Bernard

Abstract

In this paper we investigate whether coffee farms that have been granted in-house socio-environmental certification from a global buyer, display better social and environmental conduct compared to non-certified farms. We perform an econometric analysis using data from an original cross-country survey covering 575 farms in various regions of Brazil, Colombia, Costa Rica, Guatemala, and Mexico. We find that farms that have been granted in-house certification demonstrate better environmental but not better social conduct than non-certified farms. We find also that the positive relationship between in-house certification and environmental conduct is stronger if the farm sells to a cooperative, and if it is located in an institutionally weak country. Finally, we find that the institutional strength of the farm's home country has a positive influence on its social conduct. We discuss how our analysis contributes to the literature on the social and environmental impacts of certifications, and to scholarship in global value chains’ social and environmental upgrading.

Suggested Citation

  • Giuliani, Elisa & Ciravegna, Luciano & Vezzulli, Andrea & Kilian, Bernard, 2017. "Decoupling Standards from Practice: The Impact of In-House Certifications on Coffee Farms’ Environmental and Social Conduct," World Development, Elsevier, vol. 96(C), pages 294-314.
  • Handle: RePEc:eee:wdevel:v:96:y:2017:i:c:p:294-314
    DOI: 10.1016/j.worlddev.2017.03.013
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0305750X1730075X
    Download Restriction: Full text for ScienceDirect subscribers only

    File URL: https://libkey.io/10.1016/j.worlddev.2017.03.013?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Angus Deaton, 2003. "Health, Inequality, and Economic Development," Journal of Economic Literature, American Economic Association, vol. 41(1), pages 113-158, March.
    2. Valkila, Joni, 2009. "Fair Trade organic coffee production in Nicaragua -- Sustainable development or a poverty trap?," Ecological Economics, Elsevier, vol. 68(12), pages 3018-3025, October.
    3. Beuchelt, Tina D. & Zeller, Manfred, 2011. "Profits and poverty: Certification's troubled link for Nicaragua's organic and fairtrade coffee producers," Ecological Economics, Elsevier, vol. 70(7), pages 1316-1324, May.
    4. Tsung-han Tsai & Jeff Gill, 2013. "Interactions in Generalized Linear Models: Theoretical Issues and an Application to Personal Vote-Earning Attributes," Social Sciences, MDPI, vol. 2(2), pages 1-23, May.
    5. Blackman, Allen & Naranjo, Maria A., 2012. "Does eco-certification have environmental benefits? Organic coffee in Costa Rica," Ecological Economics, Elsevier, vol. 83(C), pages 58-66.
    6. Giovannucci, Daniele & Ponte, Stefano, 2005. "Standards as a new form of social contract? Sustainability initiatives in the coffee industry," Food Policy, Elsevier, vol. 30(3), pages 284-301, June.
    7. Richard J. Sexton, 1986. "The Formation of Cooperatives: A Game-Theoretic Approach with Implications for Cooperative Finance, Decision Making, and Stability," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 68(2), pages 214-225.
    8. Takahashi, Ryo & Todo, Yasuyuki, 2013. "Impact of a Shade Coffee Certification Program on Forest Conservation:A Case Study from a Wild Coffee Forest in Ethiopia," Working Papers 55, JICA Research Institute.
    9. Peter Knorringa & Khalid Nadvi, 2016. "Rising Power Clusters and the Challenges of Local and Global Standards," Journal of Business Ethics, Springer, vol. 133(1), pages 55-72, January.
    10. Meike Wollni & David R. Lee & Janice E. Thies, 2010. "Conservation agriculture, organic marketing, and collective action in the Honduran hillsides," Agricultural Economics, International Association of Agricultural Economists, vol. 41(3‐4), pages 373-384, May.
    11. Barham, Bradford L. & Callenes, Mercedez & Gitter, Seth & Lewis, Jessa & Weber, Jeremy, 2011. "Fair Trade/Organic Coffee, Rural Livelihoods, and the "Agrarian Question": Southern Mexican Coffee Families in Transition," World Development, Elsevier, vol. 39(1), pages 134-145, January.
    12. Kleemann, Linda & Abdulai, Awudu & Buss, Mareike, 2014. "Certification and Access to Export Markets: Adoption and Return on Investment of Organic-Certified Pineapple Farming in Ghana," World Development, Elsevier, vol. 64(C), pages 79-92.
    13. Barham, Bradford L. & Weber, Jeremy G., 2012. "The Economic Sustainability of Certified Coffee: Recent Evidence from Mexico and Peru," World Development, Elsevier, vol. 40(6), pages 1269-1279.
    14. Vellema, W. & Buritica Casanova, A. & Gonzalez, C. & D’Haese, M., 2015. "The effect of specialty coffee certification on household livelihood strategies and specialisation," Food Policy, Elsevier, vol. 57(C), pages 13-25.
    15. Robert E. Hall & Charles I. Jones, 2007. "The Value of Life and the Rise in Health Spending," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 122(1), pages 39-72.
    16. Neilson, Jeff, 2008. "Global Private Regulation and Value-Chain Restructuring in Indonesian Smallholder Coffee Systems," World Development, Elsevier, vol. 36(9), pages 1607-1622, September.
    17. Marie-Christine Renard, 2010. "In the Name of Conservation: CAFE Practices and Fair Trade in Mexico," Journal of Business Ethics, Springer, vol. 92(2), pages 287-299, April.
    18. Chiputwa, Brian & Spielman, David J. & Qaim, Matin, 2015. "Food Standards, Certification, and Poverty among Coffee Farmers in Uganda," World Development, Elsevier, vol. 66(C), pages 400-412.
    19. Gary Gereffi & Joonkoo Lee, 2016. "Economic and Social Upgrading in Global Value Chains and Industrial Clusters: Why Governance Matters," Journal of Business Ethics, Springer, vol. 133(1), pages 25-38, January.
    20. Raynolds, Laura T., 2009. "Mainstreaming Fair Trade Coffee: From Partnership to Traceability," World Development, Elsevier, vol. 37(6), pages 1083-1093, June.
    21. Valentina De Marchi & Eleonora Di Maria & Stefano Micelli, 2013. "Environmental Strategies, Upgrading and Competitive Advantage in Global Value Chains," Business Strategy and the Environment, Wiley Blackwell, vol. 22(1), pages 62-72, January.
    22. Mujawamariya, Gaudiose & D’Haese, Marijke & Speelman, Stijn, 2013. "Exploring double side-selling in cooperatives, case study of four coffee cooperatives in Rwanda," Food Policy, Elsevier, vol. 39(C), pages 72-83.
    23. Andrei Cechin & Jos Bijman & Stefano Pascucci & Onno Omta, 2013. "Decomposing the Member Relationship in Agricultural Cooperatives: Implications for Commitment," Agribusiness, John Wiley & Sons, Ltd., vol. 29(1), pages 39-61, January.
    24. Kevin M. Murphy & Robert H. Topel, 2006. "The Value of Health and Longevity," Journal of Political Economy, University of Chicago Press, vol. 114(5), pages 871-904, October.
    25. Fischer, Elisabeth & Qaim, Matin, 2012. "Linking Smallholders to Markets: Determinants and Impacts of Farmer Collective Action in Kenya," World Development, Elsevier, vol. 40(6), pages 1255-1268.
    26. Ibanez, Marcela & Blackman, Allen, 2016. "Is Eco-Certification a Win–Win for Developing Country Agriculture? Organic Coffee Certification in Colombia," World Development, Elsevier, vol. 82(C), pages 14-27.
    27. Ted London & Stuart L Hart, 2004. "Reinventing strategies for emerging markets: beyond the transnational model," Journal of International Business Studies, Palgrave Macmillan;Academy of International Business, vol. 35(5), pages 350-370, September.
    28. Luna, Fátima & Wilson, Paul N., 2015. "An Economic Exploration of Smallholder Value Chains: Coffee Transactions in Chiapas, Mexico," International Food and Agribusiness Management Review, International Food and Agribusiness Management Association, vol. 18(3), pages 1-22, September.
    29. Laura Raynolds & Douglas Murray & Andrew Heller, 2007. "Regulating sustainability in the coffee sector: A comparative analysis of third-party environmental and social certification initiatives," Agriculture and Human Values, Springer;The Agriculture, Food, & Human Values Society (AFHVS), vol. 24(2), pages 147-163, June.
    30. Giovannucci, Daniele & Byers, Alice & Liu, Pascal, 2008. "Adding Value: Certified Coffee Trade in North America," MPRA Paper 17174, University Library of Munich, Germany.
    31. Becchetti, Leonardo & Costantino, Marco, 2008. "The Effects of Fair Trade on Affiliated Producers: An Impact Analysis on Kenyan Farmers," World Development, Elsevier, vol. 36(5), pages 823-842, May.
    32. Joni Valkila & Pertti Haaparanta & Niina Niemi, 2010. "Empowering Coffee Traders? The Coffee Value Chain from Nicaraguan Fair Trade Farmers to Finnish Consumers," Journal of Business Ethics, Springer, vol. 97(2), pages 257-270, December.
    33. Condon, Andrew M. & Cotterill, Ronald W. & Rhodes, V. James & Shaffer, James D. & Staatz, John M., 1987. "Cooperative Theory: New Approaches," Service Reports (SR) 280614, United States Department of Agriculture, Rural Development.
    34. Muradian, Roldan & Pelupessy, Wim, 2005. "Governing the coffee chain: The role of voluntary regulatory Systems," World Development, Elsevier, vol. 33(12), pages 2029-2044, December.
    35. Bolwig, Simon & Gibbon, Peter & Jones, Sam, 2009. "The Economics of Smallholder Organic Contract Farming in Tropical Africa," World Development, Elsevier, vol. 37(6), pages 1094-1104, June.
    36. Taylor, Peter Leigh, 2005. "In the Market But Not of It: Fair Trade Coffee and Forest Stewardship Council Certification as Market-Based Social Change," World Development, Elsevier, vol. 33(1), pages 129-147, January.
    37. Elisa Giuliani & Chiara Macchi, 2014. "Multinational corporations’ economic and human rights impacts on developing countries: a review and research agenda," Cambridge Journal of Economics, Cambridge Political Economy Society, vol. 38(2), pages 479-517.
    38. Stephanie BARRIENTOS & Gary GEREFFI & Arianna ROSSI, 2011. "Economic and social upgrading in global production networks: A new paradigm for a changing world," International Labour Review, International Labour Organization, vol. 150(3-4), pages 319-340, December.
    39. H. Christopher Peterson & Bruce L. Anderson, 1996. "Cooperative strategy: Theory and practice," Agribusiness, John Wiley & Sons, Ltd., vol. 12(4), pages 371-383.
    40. Elisa Giuliani, 2016. "Human Rights and Corporate Social Responsibility in Developing Countries’ Industrial Clusters," Journal of Business Ethics, Springer, vol. 133(1), pages 39-54, January.
    41. Meike Wollni & Manfred Zeller, 2007. "Do farmers benefit from participating in specialty markets and cooperatives? The case of coffee marketing in Costa Rica1," Agricultural Economics, International Association of Agricultural Economists, vol. 37(2‐3), pages 243-248, September.
    42. Handschuch, Christina & Wollni, Meike & Villalobos, Pablo, 2013. "Adoption of food safety and quality standards among Chilean raspberry producers – Do smallholders benefit?," Food Policy, Elsevier, vol. 40(C), pages 64-73.
    43. Rossi, Arianna, 2013. "Does Economic Upgrading Lead to Social Upgrading in Global Production Networks? Evidence from Morocco," World Development, Elsevier, vol. 46(C), pages 223-233.
    44. Gilbert, Dirk Ulrich & Rasche, Andreas & Waddock, Sandra, 2011. "Accountability in a Global Economy: The Emergence of International Accountability Standards," Business Ethics Quarterly, Cambridge University Press, vol. 21(1), pages 23-44, January.
    45. Paola Perez-Aleman, 2011. "Collective Learning in Global Diffusion: Spreading Quality Standards in a Developing Country Cluster," Organization Science, INFORMS, vol. 22(1), pages 173-189, February.
    46. Arnould, Eric & Plastina, Alejandro & Ball, Dwayne, 2009. "Does Fair Trade Deliver on Its Core Value Proposition? Effects on Income, Educational Attainment, and Health in Three Countries," Staff General Research Papers Archive 39169, Iowa State University, Department of Economics.
    47. Ruben, Ruerd & Fort, Ricardo, 2012. "The Impact of Fair Trade Certification for Coffee Farmers in Peru," World Development, Elsevier, vol. 40(3), pages 570-582.
    48. Jurjonas, Matthew & Crossman, Katie & Solomon, Jennifer & Baez, Walter Lopez, 2016. "Potential Links Between Certified Organic Coffee and Deforestation in a Protected Area in Chiapas, Mexico," World Development, Elsevier, vol. 78(C), pages 13-21.
    49. van Rijsbergen, Bart & Elbers, Willem & Ruben, Ruerd & Njuguna, Samuel N., 2016. "The Ambivalent Impact of Coffee Certification on Farmers’ Welfare: A Matched Panel Approach for Cooperatives in Central Kenya," World Development, Elsevier, vol. 77(C), pages 277-292.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Qiao, Kunyuan & Dowell, Glen, 2022. "Environmental concerns, income inequality, and purchase of environmentally-friendly products: A longitudinal study of U.S. counties (2010-2017)," Research Policy, Elsevier, vol. 51(4).
    2. Elisa Giuliani & Annamaria Tuan & José Calvimontes Cano, 2021. "Creating Shared Value Meets Human Rights: A Sense-Making Perspective in Small-Scale Firms," Journal of Business Ethics, Springer, vol. 173(3), pages 489-505, October.
    3. Khadija Straaten & Rajneesh Narula & Elisa Giuliani, 2023. "The multinational enterprise, development, and the inequality of opportunities: A research agenda," Journal of International Business Studies, Palgrave Macmillan;Academy of International Business, vol. 54(9), pages 1623-1640, December.
    4. Frank Wijen & Mireille Chiroleu-Assouline, 2019. "Controversy Over Voluntary Environmental Standards: A Socioeconomic Analysis of the Marine Stewardship Council," PSE-Ecole d'économie de Paris (Postprint) halshs-02071504, HAL.
    5. Pasquali, Giovanni & Krishnan, Aarti & Alford, Matthew, 2021. "Multichain strategies and economic upgrading in global value chains: Evidence from Kenyan horticulture," World Development, Elsevier, vol. 146(C).
    6. Helga Bermeo-Andrade & Andrés F. Bahamón-Monje & Renso Aragón-Calderón & Yarmel Beltrán-Vargas & Nelson Gutiérrez-Guzmán, 2020. "Is Coffee ( Coffea arabica L.) Quality Related to a Combined Farmer–Farm Profile?," Sustainability, MDPI, vol. 12(22), pages 1-14, November.
    7. Contreras, Gabriela & Bos, Jaap W.B. & Kleimeier, Stefanie, 2019. "Self-regulation in sustainable finance: The adoption of the Equator Principles," World Development, Elsevier, vol. 122(C), pages 306-324.
    8. Tampe, Maja, 2021. "Turning rules into practices: An inside-out approach to understanding the implementation of sustainability standards," Ecological Economics, Elsevier, vol. 184(C).
    9. Oberlack, Christoph & Blare, Trent & Zambrino, Luca & Bruelisauer, Samuel & Solar, Jimena & Villar, Gesabel & Thomas, Evert & Ramírez, Marleni, 2023. "With and beyond sustainability certification: Exploring inclusive business and solidarity economy strategies in Peru and Switzerland," World Development, Elsevier, vol. 165(C).
    10. Tran, Duc & Goto, Daisaku, 2019. "Impacts of sustainability certification on farm income: Evidence from small-scale specialty green tea farmers in Vietnam," Food Policy, Elsevier, vol. 83(C), pages 70-82.
    11. Aniseh S. Bro & Daniel C. Clay & David L. Ortega & Maria C. Lopez, 2019. "Determinants of adoption of sustainable production practices among smallholder coffee producers in Nicaragua," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 21(2), pages 895-915, April.
    12. Stefano Ponte & Valentina De Marchi & Marco Bettiol & Eleonora di Maria, 2023. "The horizontal governance of environmental upgrading: Lessons from the Prosecco and Valpolicella wine value chains in Italy," Environment and Planning A, , vol. 55(8), pages 1884-1905, November.
    13. Iddrisu, Mubarak & Aidoo, Robert & Abawiera Wongnaa, Camillus, 2020. "Participation in UTZ-RA voluntary cocoa certification scheme and its impact on smallholder welfare: Evidence from Ghana," World Development Perspectives, Elsevier, vol. 20(C).
    14. Carlo Pietrobelli & Roberta Rabellotti & Ari Van Assche, 2021. "Making sense of global value chain-oriented policies: The trifecta of tasks, linkages, and firms," Journal of International Business Policy, Palgrave Macmillan, vol. 4(3), pages 327-346, September.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Ruifeng Liu & Zhifeng Gao & Rodolfo M. Nayga & Lijia Shi & Les Oxley & Hengyun Ma, 2020. "Can “green food” certification achieve both sustainable practices and economic benefits in a transitional economy? The case of kiwifruit growers in Henan Province, China," Agribusiness, John Wiley & Sons, Ltd., vol. 36(4), pages 675-692, October.
    2. Meemken, Eva-Marie & Spielman, David J. & Qaim, Matin, 2017. "Trading off nutrition and education? A panel data analysis of the dissimilar welfare effects of Organic and Fairtrade standards," Food Policy, Elsevier, vol. 71(C), pages 74-85.
    3. Ibanez, Marcela & Blackman, Allen, 2016. "Is Eco-Certification a Win–Win for Developing Country Agriculture? Organic Coffee Certification in Colombia," World Development, Elsevier, vol. 82(C), pages 14-27.
    4. van Rijsbergen, Bart & Elbers, Willem & Ruben, Ruerd & Njuguna, Samuel N., 2016. "The Ambivalent Impact of Coffee Certification on Farmers’ Welfare: A Matched Panel Approach for Cooperatives in Central Kenya," World Development, Elsevier, vol. 77(C), pages 277-292.
    5. Chiputwa, Brian & Spielman, David J. & Qaim, Matin, 2015. "Food Standards, Certification, and Poverty among Coffee Farmers in Uganda," World Development, Elsevier, vol. 66(C), pages 400-412.
    6. Ninon Sirdey & Sylvaine Lemeilleur, 2021. "Can fair trade resolve the “hungry farmer paradox”?," Review of Agricultural, Food and Environmental Studies, Springer, vol. 102(1), pages 81-106, March.
    7. Balineau, Gaëlle, 2013. "Disentangling the Effects of Fair Trade on the Quality of Malian Cotton," World Development, Elsevier, vol. 44(C), pages 241-255.
    8. Tran, Duc & Goto, Daisaku, 2019. "Impacts of sustainability certification on farm income: Evidence from small-scale specialty green tea farmers in Vietnam," Food Policy, Elsevier, vol. 83(C), pages 70-82.
    9. AKOYI, Kevin Teopista & MAERTENS, Miet, 2016. "Private Sustainability Standards in the Ugandan Coffee Sector: Empty Promises or Catalysts for Development?," Working Papers 235004, Katholieke Universiteit Leuven, Centre for Agricultural and Food Economics.
    10. Dietz, Thomas & Auffenberg, Jennie & Estrella Chong, Andrea & Grabs, Janina & Kilian, Bernard, 2018. "The Voluntary Coffee Standard Index (VOCSI). Developing a Composite Index to Assess and Compare the Strength of Mainstream Voluntary Sustainability Standards in the Global Coffee Industry," Ecological Economics, Elsevier, vol. 150(C), pages 72-87.
    11. Parvathi, Priyanka & Waibel, Hermann, 2015. "Is Organic Agriculture and Fair Trade Certification a way out of Crisis? Evidence from Black Pepper Farmers in India," 55th Annual Conference, Giessen, Germany, September 23-25, 2015 209209, German Association of Agricultural Economists (GEWISOLA).
    12. Fikadu Mitiku & Yann De Mey & Jan Nyssen & Miet Maertens, 2017. "Do Private Sustainability Standards Contribute to Income Growth and Poverty Alleviation? A Comparison of Different Coffee Certification Schemes in Ethiopia," Sustainability, MDPI, vol. 9(2), pages 1-21, February.
    13. Minten, Bart J. & Dereje, Mekdim & Engeda, Ermias & Tamru, Seneshaw, 2015. "Who benefits from the rapidly increasing Voluntary Sustainability Standards? Evidence from Fairtrade and Organic coffee in Ethiopia," 2015 Conference, August 9-14, 2015, Milan, Italy 212708, International Association of Agricultural Economists.
    14. Snider, Anna & Gutiérrez, Isabel & Sibelet, Nicole & Faure, Guy, 2017. "Small farmer cooperatives and voluntary coffee certifications: Rewarding progressive farmers of engendering widespread change in Costa Rica?," Food Policy, Elsevier, vol. 69(C), pages 231-242.
    15. Chiputwa, Brian & Qaim, Matin, 2014. "Sustainability standards, gender, and nutrition among smallholder farmers in Uganda," GlobalFood Discussion Papers 191001, Georg-August-Universitaet Goettingen, GlobalFood, Department of Agricultural Economics and Rural Development.
    16. Victoria A. Maguire-Rajpaul & Vinesh M. Rajpaul & Constance L. McDermott & Luís Fernando Guedes Pinto, 2020. "Coffee certification in Brazil: compliance with social standards and its implications for social equity," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 22(3), pages 2015-2044, March.
    17. Jorge Sellare & Eva‐Marie Meemken & Christophe Kouamé & Matin Qaim, 2020. "Do Sustainability Standards Benefit Smallholder Farmers Also When Accounting For Cooperative Effects? Evidence from Côte d'Ivoire," American Journal of Agricultural Economics, John Wiley & Sons, vol. 102(2), pages 681-695, March.
    18. Meemken, Eva-Marie & Veettil, Prakashan Chellattan & Qaim, Matin, 2017. "Toward Improving the Design of Sustainability Standards—A Gendered Analysis of Farmers’ Preferences," World Development, Elsevier, vol. 99(C), pages 285-298.
    19. Blackman, Allen & Rivera, Jorge, 2010. "The Evidence Base for Environmental and Socioeconomic Impacts of “Sustainable” Certification," RFF Working Paper Series dp-10-17, Resources for the Future.
    20. Maja Tampe, 2018. "Leveraging the Vertical: The Contested Dynamics of Sustainability Standards and Labour in Global Production Networks," British Journal of Industrial Relations, London School of Economics, vol. 56(1), pages 43-74, March.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:wdevel:v:96:y:2017:i:c:p:294-314. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.elsevier.com/locate/worlddev .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.