Ж. . Нурмаганбетова, . Н. . Аширбаев, . А. . Полатбек, and А. Байдибекова, “PPROBLEMS OF PHYSICAL CONTENT, REDUCED TO A SYSTEM OF LINEAR EQUATIONS WITH TWO VARIABLES ”, Phys-Math, vol. 72, no. 4, pp. 48–55, Dec. 2020.