共 8 条
[4]
经济周期循环论[M]. 中国长安出版社 , (美) 熊彼特, 2009
[6]
An Exploration into the Determinants of Patent Activities: Some Empirical Evidence for Austria[J] . Manfred M. Fischer,Josef Frohlich,Helmut Gassler.Regional Studies . 1994 (1)
[8]
Patent Statistics as Economic Indicators: A Survey[J] . Zvi Griliches.Journal of Economic Literature . 1990 (4)