4TSENG C Y. Technological innovation in the bric economies [ J ]. Research - Technology Management, 2009, 52 (2) : 29 - 35.
5United States Patent and Trademark Office. US Patent Full - Text Database [DB/OL]. (2013 - 12) [2013 - 12] http: //patft. uspto, gov/netahtml/PTO/search-adv, htm.
7HIRSCH J E. An index to quantify an individual scientific research output [ J ]. Proceedings of the National Academy of Sciences of the United States of America, 2005, 102 (46) : 16569 - 16572.
8GUAN J C, GAO X. Exploring the h - index at patent level [ J ]. Journal of the American Society for Information Science and Technol- ogy, 2008, 60 (1): 35-40.