KHACHATRYAN, Kh. A. On some systems of nonlinear integral Hammerstein-type equations on the semiaxis. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 62, n. 4, p. 552–566, 2010. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2887. Acesso em: 11 apr. 2025.