VAN WINCKEL, F. De problematiek van de mathematische programmering. JORBEL - Belgian Journal of Operations Research, Statistics, and Computer Science, [S. l.], v. 6, n. 3-4, p. 41–49, 1966. Disponível em: https://www.orbel.be/jorbel/index.php/jorbel/article/view/55. Acesso em: 28 apr. 2024.