EREMIN , I. I. Symmetric duality for lexicographic problems of linear programming. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 44, n. 6, p. 766–773, 1992. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8007. Acesso em: 5 dec. 2025.