LÓPEZ-GÓMEZ, Julian; RABINOWITZ, Paul H. Nodal solutions for a class of degenerate one dimensional BVP’s. Topological Methods in Nonlinear Analysis, [S. l.], v. 49, n. 1, p. 359–376, 2016. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2016.087. Acesso em: 1 jul. 2025.