共 3 条
- [1] 创新及其不满[M]. 中国人民大学出版社 , ( ) 勒纳, 2007
- [2] Accounting for the recent surge in U.S. patenting: changes in R&D expenditures, patent yields, and the high tech sector[J] . Jinyoung Kim,Gerald Marschke.Economics of Innovation and New Technology . 2004 (6)
- [3] INNOVATION POLICY AND THE ECONOMY .2 Carl Shapiro. . 2001