ALDASHEV, S. A. Well-posedness of the Dirichlet and Poincare problems for a multidimensional Gellerstedt equation in a cylindric domain. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 64, n. 3, p. 426–432, 2012. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2587. Acesso em: 5 dec. 2025.