5Jeffrey Williams, Anne Peck,Albert Park and Scott Rozelle:“The Emergence of a Futures Market: Muggbeans on the China Zheng zhou Commodity Exchange”Nov, 1997.
6Hoffman, G. W.: "Futures Trading upon Organized Commodity Markets In the United States, Philadelphi", "Review of Economic Studies" 1932(12).
8(New Concepts Concerning Futures Markets), American Economic Review,1962 (52), P440.
9Blau, G. :Some Aspects of the Theory of Futures Trading, Review of Economic Studies,1994(12).
10GAO. "Farmers Use of Risk Management Strategies", Report to the Ranking Minority Member Committee on Agriculture, House of Representatives,April, 1999.