An analogue of Saint Venant’s principle and uniqueness of the first boundary-value problem in unbounded regions for a third order equation of combined type. Neliniini Kolyvannya, [S. l.], v. 9, n. 1, p. 117–126, 2006. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/384. Acesso em: 22 jan. 2026.