MIKHAILETS, V. A.; SKOROBOHACH , T. B. Fredholm boundary-value problem in Sobolev – Slobodetsky spaces. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 73, n. 7, p. 920–930, 2021. DOI: 10.37863/umzh.v73i7.6684. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/6684. Acesso em: 27 apr. 2025.