Khachatryan AK, Khachatryan KA. On some systems of convolution-type first-order integrodifferential equations on the semiaxis. Ukr. Mat. Zhurn. [Internet]. 2009 Sep. 25 [cited 2025 Apr. 24];61(9):1277-92. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/3099