Dai, Xiang; Ma, Haowei; Zhang, Erzhen - In: China finance and economic review : CFER 13 (2024) 1, pp. 23-42
positive impact on firms' markups, but has an "inverted U-shaped" nonlinear influence, which first promotes and then inhibits … a negative impact when it exceeds this value. That is, there is an "inverted U-shaped" nonlinear relationship between …