Д. . Нурбаева, Ж. . Нурмухамедова, С. . Ералиев, and Б. . Косанов, “ABOUT DEVELOPMENT OF STUDENTS ’ THINKING WHEN SOLVING TRIGONOMETRIC EQUATIONS AND INEQUALITIES IN THE SCHOOL ALGEBRA COURSE”, Phys-Math, vol. 69, no. 1, pp. 138–143, Jun. 2021.