Khachatryan, A. Kh., and Kh. A. Khachatryan. “On Some Systems of Convolution-Type First-Order Integrodifferential Equations on the Semiaxis”. Ukrains’kyi Matematychnyi Zhurnal 61, no. 9 (September 25, 2009): 1277-1292. Accessed April 26, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/3099.