N. Djumabaev and G. Mamutova, “PARAMETRLI TRIGONOMETRIYALÍQ TEŃLEMELERDI SHESHIW USÍLLARÍ”, SS, no. 3-2, pp. 52–55, Sep. 2021, Accessed: Aug. 08, 2026. Available: https://journal.ndpi.uz/ss/article/view/2021-3-2-026