LINCHUK, Yu. S. Representation of solutions of one integro-differential operator equation. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 59, n. 1, p. 136–139, 2007. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3297. Acesso em: 6 dec. 2025.