环境规制、技术距离与异质性企业研发选择
金晓雨, 宋嘉颖
Environmental Regulation, Technological Distance and R&D of Heterogeneous Firms
Jin Xiaoyu, Song Jiaying
南方经济 . 2020, (6): 70 -86 .  DOI: 10.19592/j.cnki.scje.370295