MING, L. S.; ADAM, R.; TUAN LONIK, K. GRAVITY MODEL ON A SINGLE COMMODITY: A REVIEW OF LITERATURE. Management Research Journal, [S. l.], v. 5, p. 32–39, 2016. Disponível em: https://ojs.upsi.edu.my/index.php/MRJ/article/view/1516. Acesso em: 22 dec. 2024.