BARNYAK, M. Ya. Construction of solutions for the problem of free oscillations of an ideal liquid in cavities of complex geometric form. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 57, n. 12, p. 1587–1600, 2005. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3711. Acesso em: 11 apr. 2025.