Muhammadjonov, Jumanazar Jo‘rabek o‘g‘li, Oyatillo Qahramon o‘gli Asranov, and Kumush Sultonbek qizi O‘rinboyeva. “QUYOSH SISTEMASINING BARQARORLIK MUAMMOSI”. Educational Research in Universal Sciences 2, no. 14 SPECIAL (November 17, 2023): 923–928. Accessed November 22, 2024. http://erus.uz/index.php/er/article/view/4556.