Multipoint problem in time for singular parabolic equations in spaces of type S. Neliniini Kolyvannya, [S. l.], v. 25, n. 4, p. 291–324, 2022. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/1075. Acesso em: 6 dec. 2025.