7[4]Xiang L,Shen Y,He Y.et al.Application of rough set theory on factor analysis of influencing the grain output[J].Journal of Zhejiang Univeristy (Agric.&:Life Sci.),2003,29(3):343-346.
8郭书田.粮食政策、理论与方法--中国农业部与世界银行的报告[M].北京:新华出版社,1995.
9恰亚诺夫.农民经济组织[M].中译本.北京:中央编译出版社,1996.
10L.Xiang, Y.Shen, Y.He, and X.Yu. Application of Rough Set Theory on Factor Analysis of Influencing the Grain Output[J]. Journal of Zhejiang Univeristy (Agric. & Life Sci.), 2003, 29 (3): 343-346.