Сулейменов, Ж. and Қуаныш, С. . (2020) “ON THE EXISTENCE OF A CONDITIONALLY PERIODIC SOLUTION OF A QUASILINEAR SYSTEM DIFFERENTIAL EQUATION IN THE CRITICAL CASE ”, Bulletin of Abai KazNPU. Series of Physical and mathematical sciences. Алматы, Казахстан, 72(4), pp. 56–62. doi: 10.51889/2020-4.1728-7901.08.