LUKOVSKY , I. A.; TIMOKHA , A. N. On a class of boundary value problems in the theory of surface waves. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 43, n. 3, p. 359–364, 1991. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/9616. Acesso em: 6 dec. 2025.