Safarboyeva Maftuna Aminboy qizi. 2026. “KASR TARTIBLI DIFFERENSIAL TENGLAMALARDA KOSHI MASALASI: BANAX FIKS NUQTA TEOREMASI ORQALI MAVJUDLIK VA YAGONALIK SHARTLARI”. JOURNAL OF NEW CENTURY INNOVATIONS 93 (1): 195-98. http://journalss.org/index.php/new/article/view/15948.