2Den Ouden M., A.A.Dijkhuizen,B.R.M.Huiene, et al. Vertical Cooperation in Agricultural Production-Marketing Chains, with Special Reference to Product Differentiation in Pork. Agribusiness, 1996, 12: 277-290.
3Henry W. Kinnucan , Joseph J. Molnar. Policies and Regulatory Measures for Enhancing Distribution and Marketing of Agricultural Products: The U. S. Experience[J].China Agricultural Economic Review, 2004,2(4):504-517.
4OECD. Supermarkets and the Meat Supply Chain--The Economic Impact of Food Retail on Farmers, Processors and Consumers.Paris, 2006.