Fayzullayev SU o‘g‘li. LOBACHEVSKIY AKSIOMASI VA UNDAN KELIB CHIQADIGAN NATIJALAR. ERUS [Internet]. 2023 Dec. 29 [cited 2026 Jan. 26];2(18 SPECIAL):144-7. Available from: https://erus.uz/index.php/er/article/view/5384