VILKAS, E. Solvability of the system of linear inequalities. Lithuanian Mathematical Journal, [S. l.], v. 6, n. 2, p. 211–215, 1966. DOI: 10.15388/LMJ.1966.19717. Disponível em: https://www.journals.vu.lt/LMJ/article/view/19717.. Acesso em: 18 jul. 2024.