MAHMOOD, H.; ALKHATEEB, T. T. Y.; MAALEL, N. Egyptian Intra Agriculture Trade with COMESA Trading Partners: A Gravity Model. International Journal of Economics and Financial Issues, [S. l.], v. 6, n. 6S, p. 177–182, 2017. Disponível em: https://econjournals.com/index.php/ijefi/article/view/4145. Acesso em: 20 apr. 2024.