E.M. BADR; M.I. MOUSSA. On Jump-Critical Ordered Sets with Jump Number Four. Journal of Advances in Applied & Computational Mathematics, [S. l.], v. 1, n. 1, p. 8–13, 2014. DOI: 10.15377/2409-5761.2014.01.01.2. Disponível em: https://avantipublisher.com/index.php/jaacm/article/view/55. Acesso em: 21 jun. 2025.