ANOP, A. V.; MURACH, A. A. Regular Elliptic Boundary-Value Problems in the Extended Sobolev Scale. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 66, n. 7, p. 867–883, 2014. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2185. Acesso em: 5 dec. 2025.