共 50 条
- [21] Are there financing constraints for R&D and investment in German manufacturing firms? ECONOMICS AND ECONOMETRICS OF INNOVATION, 2000, : 399 - 434
- [27] A semi-parametric modeling of firms' R&D expenditures with zero values Scientometrics, 2006, 69 : 57 - 67
- [28] Leverage, R&D expenditures, and accounting conservatism: Evidence from technology firms QUARTERLY REVIEW OF ECONOMICS AND FINANCE, 2022, 84 : 285 - 304
- [30] Does R&D cooperation with competitors cause firms to invest in R&D more intensively? evidence from Korean manufacturing firms JOURNAL OF TECHNOLOGY TRANSFER, 2023, 48 (03): : 1045 - 1076