共 50 条
- [24] From discovery to deployment: Big data in materials R&D [J]. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2015, 250
- [25] The market value of R&D, patents, and trademarks [J]. RESEARCH POLICY, 2011, 40 (07) : 969 - 985
- [26] R&D, patents and stock return volatility [J]. Journal of Evolutionary Economics, 2012, 22 : 811 - 832
- [27] R&D and patents: is it a two way street? [J]. ECONOMICS OF INNOVATION AND NEW TECHNOLOGY, 2019, 28 (02) : 180 - 196
- [28] R&D, patents and stock return volatility [J]. JOURNAL OF EVOLUTIONARY ECONOMICS, 2012, 22 (04) : 811 - 832
- [29] Count data stochastic frontier models, with an application to the patents–R&D relationship [J]. Journal of Productivity Analysis, 2013, 39 : 271 - 284