4Ariyarame, C. B.; Featherstone, A. M.; Langemeier, M. R. and Bartone, D. G: Measuring X-Efficiency and Scale Efficiency for a Sample of Agricultural Cooperatives, Agricultural Resource Economics Review, 29(2): 198-207, 2000.
5Boyle, G E.: The Economic Efficiency of Irish Dairy Marketing Cooperatives, Agribusiness, 20 (2): 143-153, 2004.
6Barros, C. P.; Caporate, G M. and Abreu, M.: Productivity Drivers in European Banking: Country Effects, Legal Tradition and Market Dynamics, Economics and Finance Discussion Papers, Brunel University, 2008.
7Farrell, M.: The Measurement of Productive Efficiency, Journal of the Royal Statistical Soc/ety, Series A, 120(3): 253-281, 1957.
8Featherstone, A. M. and Al-Kheraiji, A. A.: Debt and Input Misallocation of Agricultural Supply and Marketing Cooperatives, Applied Economics, 27(9): 871-878, 1995.
9Galdeano-Gomez, E.; Cespedes-Lorente, J. and Rodrfguez-Rodriguez, M. : Productivity and Environmental Performance in Marketing Cooperatives: An Analysis of the Spanish Horticultural Sector, Journal of Agricultural Economics, 57 (3): 479-500, 2006.
10Galdeano-Gomez, E. : Productivity Effects of Environmental Performance: Evidence from TFP Analysis on Marketing Cooperatives, Applied Economics, 40(14): 1873-1888, 2008.
