共 50 条
- [43] R&D HETEROGENEITY AND THE IMPACT OF R&D SUBSIDIES ECONOMIC JOURNAL, 2021, 131 (640): : 3338 - 3364
- [45] R&D cooperation and the joint exploitation of R&D CANADIAN JOURNAL OF ECONOMICS-REVUE CANADIENNE D ECONOMIQUE, 1997, 30 (03): : 673 - 684
- [47] R&D Application Reinforcement Strategy and System for Public R&D Institute in Geoscience and Mineral Resource Area ECONOMIC AND ENVIRONMENTAL GEOLOGY, 2008, 41 (05): : 527 - 539