Izetaeva, G., et al. “TRIGONOMETRIYALIQ TEŃLEMELER DÚZIWDE QATNASATUǴIN AŃLATPALAR HÁM OLARDI TÚRLENDIRIW USILLARI”. ILIM Hám JÁMIYET, no. 4-1, Oct. 2022, pp. 10-12, https://journal.ndpi.uz/ss/article/view/2022-4-1-004.