Akhmetova, O., and S. . Issayev. “APPLICATION OF THE FICTITIOUS REGION METHOD TO SOLVING A MODEL OCEANOLOGY PROBLEM”. Bulletin of Abai KazNPU. Series of Physical and Mathematical Sciences, vol. 83, no. 3, Sept. 2023, pp. 34-42, doi:10.51889/2959-5894.2023.83.3.004.