An approach to solution of a nonlocal problem for a system of hyperbolic equations with integral conditions. Neliniini Kolyvannya, [S. l.], v. 20, n. 4, p. 435–450, 2017. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/880. Acesso em: 8 dec. 2025.