GORDINSKY, L. D. On existence of solutions of non-linear boundary value problems of shallow shells of rotation . Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 23, n. 3, p. 377–381, 1971. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8566. Acesso em: 6 dec. 2025.