共 5 条
- [2] Patent information for strategic technology management[J] . Holger Ernst.World Patent Information . 2003 (3)
- [3] Using patent statistics as knowledge base indicators in the biotechnology sectors: An application to France, Germany and the U.K[J] . Shyama V. Ramani,Marie-Angele de Looze.Scientometrics . 2002 (3)
- [5] Patent Statistics as Economic Indicators: A Survey[J] . Zvi Griliches.Journal of Economic Literature . 1990 (4)