KHACHATRYAN, A. Kh.; KHACHATRYAN, Kh. A. On the construction of a nonnegative solution for one class of Urysohn-type nonlinear integral equations on a semiaxis. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 63, n. 1, p. 110–118, 2011. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2702. Acesso em: 6 dec. 2025.