共 6 条
[1]
制度、技术与中国农业发展[M]. 上海三联书店 , 林毅夫著, 2005
[6]
Patent Breadth,Patent Life,and the Pace of Technological Progress .2 O Donoghue,T.S.Scotchmer,J.Thisse. Journal ofEconomics and Management Strategy . 1998