Sapin, A.M. 2020. “FORECASTING MORTALITY FOR KAZAKHSTAN AND ASSESSING IT’S IMPACT ON THE STATE PENSION SPENDING”. Bulletin of Abai KazNPU. Series of Physical and Mathematical Sciences 70 (2). Алматы, Казахстан:116-23. https://doi.org/10.51889/2020-2.1728-7901.17 .