EMETS, O. A.; KOLECHKINA, L. M. Optimization Problem on Permutations with Linear-Fractional Objective Function: Properties of the Set of Admissible Solutions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 52, n. 12, p. 1630–1640, 2000. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4567. Acesso em: 5 dec. 2025.