DZHAMALOV, S. Z. Correctness of one nonlocal boundary-value problem with constant coefficient for the nonlinear mixed-type equation of the second kind of the second order in the space. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 71, n. 1, p. 47–58, 2019. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/1418. Acesso em: 5 dec. 2025.