曹添旺Chen, Chau-NsnChau-NsnChenTsaur, Tien-WangTien-WangTsaur2009-02-032018-06-282009-02-032018-06-281982-08http://ntur.lib.ntu.edu.tw//handle/246246/117830en-USGross Substitution,Gresham's Law,and Hayek's Free Currency Systemjournal article