共 20 条
[12]
R&D spillovers and firms’ performance in Italy[J] . Francesco Aiello,Paola Cardamone.Empirical Economics . 2008 (1)
[14]
Innovation and Productivity Across Four European Countries[J] . Rachel Griffith,Elena Huergo,Jacques Mairesse,Bettina Peters.Oxford Review of Economic Policy . 2006
[15]
全国企业创新调查年鉴2019 .2 中国统计出版社 .
[16]
IP5 Statistics Report 2018 Edition .2 European Patent Office,等. . 2019
[17]
中国区域创新能力评价报告 .2 . 2011
[18]
Protecting Their Digital Assets:The Use of Formal&Informal Appropriability Strategies by App Developers .2 Miric,M,Boudreau,K.J,Jeppesen,L.B. Research Policy . 2019
[19]
Research, Innovation And Productivi[Ty: An Econometric Analysis At The Firm Level[J] . Bruno Crepon,Emmanuel Duguet,Jacques Mairessec.Economics of Innovation and New Technology . 1998 (2)