Alpusov А. ., and Кokazhaevа А. . “RESOLUTIONS OF INDICATIVE INEQUALITIES BY THE METHOD FEEDBACK”.
Bulletin of Abai KazNPU. Series of Physical and Mathematical Sciences
, vol. 69, no. 1, June 2021, pp. 32-37, doi:10.51889/2020-1.1728-7901.05.