BOICHUK , A. A.; ZHURAVLEV , V. F. Solvability criterion of linear boundary-value problems for integro-differential Fredholm equations with a degenerate kernel in Banach spaces. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 72, n. 11, p. 1469–1486, 2020. DOI: 10.37863/umzh.v72i11.2322. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2322. Acesso em: 5 dec. 2025.