4K. Pavitt, Patent statistics as indicators of innovative activities : Possibilities and problems [ J ]. Scientometrics, Volume 7, Numbers 1 -2, 1985(1).
5Shyama V. Ramani and Marie - Angele de Looze. Using patent statistics as knowledge base indicators in the biotechnology sectors: an application to France, Germany and the U. K [ J]. Scientornetrics, 2002(7).
6Kelly Day Rubenstein. Transferring Public Research : The Patent Licensing Mechanism in Agriculture [J]. The Journal of Technology Transfer, Volume 28, Number 2, 2003 (4).
