СУЛЕЙМЕНОВ, Ж.; ҚУАНЫШ, С. . 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, v. 72, n. 4, p. 56–62, 2020. DOI: 10.51889/2020-4.1728-7901.08. Disponível em: https://bulletin-phmath.kaznpu.kz/index.php/ped/article/view/75. Acesso em: 23 nov. 2024.