Boboqulova Durdona Sanjar qizi (2025) “IKKINCHI TARTIBLI CHIZIQLARNING QUTB KOORDINATALARDAGI TENGLAMALARI”, НАУЧНЫЕ ИССЛЕДОВАНИЯ И ИННОВАЦИИ, 1(1), pp. 234–237. Available at: https://globalscholars.uz/index.php/nii/article/view/1404 (Accessed: 22 March 2026).