“…The PPML method, proposed by Silva and Tenreyro (), has been suggested as an estimation method to account for the specification issues of the gravity equation. The PPML method has been widely used in the literature (e.g., Anderson & Yotov, ; Anderson, Larch, & Yotov, ; Burger et al, ; Dreyer & Fedoseeva, ; Ghazalian, ; Philippidis, Resano‐Ezcaray, & Sanjuán‐López, ) since the estimator is consistent in the presence of heteroskedasticity in the error term, and addresses zero values of the dependent variable in the level‐log form (Silva & Tenreyro, ). In addition, PPML performs well in small samples (Westerlund & Wilhelmsson, ).…”