ZHURAVLEV, V. F.; ZABRODSKIY, P. N.; FOMIN, N. P. Conditions of solvability and representation of the solutions of equations with operator matrices. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 71, n. 4, p. 471–485, 2019. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/1452. Acesso em: 5 dec. 2025.