KHACHATRYAN, A. Kh.; KHACHATRYAN, Kh. A. On some systems of convolution-type first-order integrodifferential equations on the semiaxis. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 61, n. 9, p. 1277–1292, 2009. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3099. Acesso em: 27 apr. 2025.