J. Ibrohimov and D. Ergashova, “CHEGIRMALAR SINFLARI. EYLER VA FERMA TEOREMALARI”, Scientific journals "D-PRESS SERVICES", vol. 3, no. 5, pp. 10–14, Nov. 2025, Accessed: Apr. 16, 2026. [Online]. Available: https://d-pressa.com/index.php/dps/article/view/657