共 8 条
- [1] 计量经济学教程[M]. 北京交通大学出版社 , 孙敬水主编, 2005
- [2] Motives to patent: Empirical evidence from Germany[J] . Knut Blind,Jakob Edler,Rainer Frietsch,Ulrich Schmoch.Research Policy . 2006 (5)
- [3] Patent applications and subsequent changes of performance: evidence from time-series cross-section analyses on the firm level[J] . Holger Ernst.Research Policy . 2001 (1)
- [5] An Event-Study Approach to Measuring Innovative Output: The Case of Biotechnology[J] . David H. Austin.The American Economic Review . 1993 (2)
- [6] Patent Statistics as Economic Indicators: A Survey[J] . Zvi Griliches.Journal of Economic Literature . 1990 (4)
- [7] PATENT STATISTICS AS A MEASURE OF TECHNICAL CHANGE [J]. JOURNAL OF POLITICAL ECONOMY, 1969, 77 (03) : 392 - 398
- [8] Corporate Inventive Output, Profits, and Growth[J] . F. M. Scherer.Journal of Political Economy . 1965 (3)