ANOP, A. V.; KASIRENKO, T. Elliptic boundary-value problems in Hörmander spaces. Methods of Functional Analysis and Topology, [S. l.], v. 22, n. 4, p. 295–310, 2016. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/643. Acesso em: 17 dec. 2025.