ISKENDEROV, N. S.; JAFAROVA, L. N. Direct and inverse scattering problems for a hyperbolic system of six equations of first order on a semi-axis. Збірник Праць Інституту математики НАН України, [S. l.], v. 14, n. 3, p. 128–160, 2017. Disponível em: https://trim.imath.kiev.ua/index.php/trim/article/view/316. Acesso em: 29 квіт. 2024.