In this paper we use a gravity model in order to estimate the magnitude of potential trade flows between Greece and nine Balkan countries. We adopt a two stage approach. At the first stage the coefficients of the gravity model for the implemented trade between Greece and thirty trade partners...

This paper is aimed at multiplicatively estimating the parameters of the gravity equation by using the Poisson Pseudo-Maximum-Likelihood (PPML) estimator, and taking heteroskedasticity into account at the same time. Besides, in order to compare the results, the model will be estimated trough OLS...