GILEWICZ, J.; PINDOR, M. General algorithm of computation of $c$-table and detection of valleys. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 62, n. 6, p. 762–772, 2010. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2907. Acesso em: 5 dec. 2025.