BARANETSKIJ, Ya.O.; DEMKIV, I.I.; IVASIUK, I.Ya.; KOPACH, M.I. The nonlocal problem for the $2n$ differential equations with unbounded operator coefficients and the involution. Carpathian Mathematical Publications, [S. l.], v. 10, n. 1, p. 14–30, 2018. DOI: 10.15330/cmp.10.1.14-30. Disponível em: https://scijournals.pnu.edu.ua/index.php/cmp/article/view/1467. Acesso em: 25 apr. 2024.