Safarov A., Safarov A., Abrayev B. Abrayev B., and Erdonov B. Erdonov B. “Natural Sonlar Uchligini Oltita Tub Son Yordamida Ifodalashlar Masalasida Kichik Yoylar bo’yicha Integralni Baholash”. TerDU xabarlari 2, no. 02-2025 (October 17, 2025). Accessed May 11, 2026. https://journals.tersu.uz/index.php/1/article/view/46.