Fryer, R. G., and M. O. Jackson (2002) " Categorical Cognition: A Psychological Model of Categories and Identication in Decision Making," Etc Microeconomics 0211002, EconWPA.
Fryer, R. G., and M. O. Jackson (2002): "Categorical Cognition: A Psychological Model of Categories and Identication in Decision Making," Microeconomics 0211002, EconWPA.