1Joseph E.Stiglitz.Infomation and the change in the paradigm in economics[J].American Economic Review,2002,92:472-540.
2Nalson.High Technology Policy of the Five Countries[M].1992.
3Harvey Lapan,Gian Carlo Moschini.Grading,minimum quality standards,and the labeling of genetically modified products[J].American Journal of Agricultural Economics,2007,89(3):769-783.