Wu, Liudan; Hao, Lili; Wu, Lingzhi; Gao, Ruize; Chen, Ji - In: Amfiteatru economic : an economic and business research … 25 (2023) 63, pp. 625-642
were constructed within the gravity model (GM) and stochastic frontier analysis (SFA). Taking into account individual … heterogeneity, a true fixed-effects stochastic frontier gravity model (TFE-SFA-GM) was developed and empirically analysed using data …