UGBE, Thomas adidaumbe; AKPAN, Stephen; USEN, John; AJAH, Ofem. A Modified Vogel Approximation Method for Solving Balanced Transportation Problems. American Scientific Research Journal for Engineering, Technology, and Sciences, Jordan, v. 14, n. 3, p. 289–302, 2015. Disponível em: https://asrjetsjournal.org/American_Scientific_Journal/article/view/1074. Acesso em: 30 sep. 2025.