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- [26] A semi-parametric modeling of firms' R&D expenditures with zero values [J]. Scientometrics, 2006, 69 : 57 - 67
- [27] Leverage, R&D expenditures, and accounting conservatism: Evidence from technology firms [J]. QUARTERLY REVIEW OF ECONOMICS AND FINANCE, 2022, 84 : 285 - 304
- [29] Does R&D cooperation with competitors cause firms to invest in R&D more intensively? evidence from Korean manufacturing firms [J]. JOURNAL OF TECHNOLOGY TRANSFER, 2023, 48 (03): : 1045 - 1076
- [30] Does R&D cooperation with competitors cause firms to invest in R&D more intensively? evidence from Korean manufacturing firms [J]. The Journal of Technology Transfer, 2023, 48 : 1045 - 1076