MING, Lee Siu; ADAM, Radziah; TUAN LONIK, Ku’Azam. GRAVITY MODEL ON A SINGLE COMMODITY: A REVIEW OF LITERATURE. Management Research Journal, [S. l.], v. 5, p. 32–39, 2016. Disponível em: https://ejournal.upsi.edu.my/index.php/MRJ/article/view/1516. Acesso em: 14 dec. 2025.