1Boger, S. : Quality and Contractual Choice: a Transaction Cost Approach to the Polish Hog Market, European Review of Agricultural Economics, 2001, Vol 28(3) : 241 - 261.
2Duval,Y. and Biere, A. : Grain Producers' Attitudes to New Forms of Supply Chain Coordination, International Food arm Agribusiness Management Review, 1998, 1 (2) :179 - 193.
3Kliebenstein, James B. and Lawrence, John D. : Contracting and Vertical Coordination in the United States Pork Industry, American Journal of Agricultural Economics, 1995,77(December) : 1213- 1218.
4Mahoney, J. T. : The Choice Organizational Form: Vertical Financial Ownership versus Other Methods of Vertical Integration,Strategic Management Journal, 1992,13 : 559 - 584.
5Martinez, S. W: Vertical Coordination of Marketing Systems : Lessons From the Poultry, Egg and Pork Industries, U. S. Department of Agriculture, ERS, Agricultural Economic Report No. 807,2002.
6Marion, B.W: The Organization and Performance of the U. S Food System, Lexington MA.. Lexington Books, 1985.
7Mighell, R. and Jones, L.: Vertical Coordination in Agriculture, U.S. Department of Agriculture, ERS, Agricultural Economic Report No. 19, 1963.
8Pcole, N. D. ; Del Camtm Gomis; lgual, J. and Gimenez, F. V. : Formal Contracts in Fresh Produce Markets, Food Policy, 1998,Vol. 23, No.2, pp. 131-142.
9Mighell R L,Jones L A.Vertical Coordination in Agriculture[R] //Agricultural Economic Report No.19.Economic Research Service,United States Department of Agriculture,1963:90
10Williamson O E.The Economic Instituions of Capitalism:Firms,Markets and Relational Contracting[M].New York:Free Press,1985:50-54
