DYMARSKII, Ya. M. Unbounded branches of solutions of some boundary-value problems. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 48, n. 9, p. 1194–1199, 1996. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5234. Acesso em: 5 dec. 2025.