URINOV, A. K.; OKBOEV, A. B. Modified Cauchy problem for one degenerated hyperbolic equation of the second kind. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 72, n. 1, p. 100–118, 2020. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/656. Acesso em: 7 apr. 2025.