EL-SHERBENY, Nasser Abdel-Magied. Minimum Convex and Differentiable Cost Flow Problem with Time Windows. International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 20, n. 1, p. 139–150, 2015. Disponível em: https://gssrr.org/JournalOfBasicAndApplied/article/view/3368. Acesso em: 18 sep. 2025.