2026-10-14T20:17:14Z https://www.scidb.cn/oai

10.57760/sciencedb.08604 2023-09-07T15:26:08Z

2023-09-07 The Impact of the “Two-Invoice System” on the Innovation Efficiency of Pharmaceutical Companies Based on the Super SBM Model doi:10.57760/sciencedb.08604 en 本研究选取2015-2020年中国上市药企面板数据作为样本，考察“两票制”对采用差分法的药企创新效率的影响。Stata用于数据分析。 China ; Pharmaceutical Companies ; innovation efficiency Jia-Hui Zhang PUBLIC https://creativecommons.org/publicdomain/zero/1.0/ dataset Science Data Bank