Токибетов, Ж. ., Башар, . Н. . and Пирманова, А. . (2020) “THE CAUCHY-DIRICHLET PROBLEM FOR A SYSTEM OF FIRST-ORDER EQUATIONS”, Bulletin of the Abai KazNPU, the series of "Physical and Mathematical Sciences". Алматы, Казахстан, 72(4), pp. 68–72. doi: 10.51889/2020-4.1728-7901.10.