科创企业研发投入对企业绩效的非线性影响——基于固定效应面板门槛模型的实证研究
赵毅, 王楠, 张陆洋
The Non-linear Effect of R&D Input on Enterprise Performance in Sci-Tech Innovation Enterprises——An Empirical Research Based on the Fixed-Effect Panel Threshold Model
Zhao Yi, Wang Nan, Zhang Luyang
工业技术经济
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2021, (1): 48
-58
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DOI: 10.3969/j.issn.1004-910X.2021.01.006
