8DICKSON D L, BAILEY D. Meat traceability: Are U. S. consumer willing to pay for it [J]. Journal of Agriculture and Resource Economics, 2002,27 (2) : 348-364.
9MATSUMOTO S. Consumers responses to front vs. back package GM labels in Japan[J]. Journal of Agricultural & Food Industrial Organization, 2004,2 (5) : 1050,
10BROWN J,CRANFIELD J A, HENSON S. Relating consumer willingness-to-pay for food safety to risk tolerance: an experimental approach[J].Canadian Journal of Agricultural Economics,2005,53(2/3) :249-263.