A multipoint problem for higher order parabolic equations on a parallelepiped. Neliniini Kolyvannya, [S. l.], v. 12, n. 3, p. 336–346, 2009. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/530. Acesso em: 21 jan. 2026.