有效专利失效速率测度方法研究
张娴, 许海云, 方曙, 刘春江, 曾荣强
Study on Measurement Methods of Stock Ratio and Failure Rate for Patents in Force
Zhang Xian, Xu Haiyun, Fang Shu, Liu Chunjiang, Zeng Rongqiang
图书情报工作
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2014, (13): 90
-94,74
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DOI: 10.13266/j.issn.0252-3116.2014.13.015
