Zebiniso Uyg’un qizi, Xushmurodova, and Davletov Davronbek Egamberganovich. 2022. “EVKLID VA LOBACHEVSKIY GEOMETRIYALARINI QIYOSIY TAHLILI”. Scientific Impulse 1 (4):1029-35. https://nauchniyimpuls.ru/index.php/ni/article/view/1899.