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 16, 2025). Accessed June 30, 2026. https://journals.tersu.uz/index.php/1/article/view/46.