Yavidov, B., G. Saburova, K. Nurimbetov, and M. Ollomberganova. “BEYKER-KEMPBEL-XAUZDORF FORMULASIGA OID BIR MASALANING YECHILISH METODIKALARI”. ILIM hám JÁMIYET, no. 3-2 (September 16, 2020): 107–109. Accessed August 7, 2026. https://journal.ndpi.uz/ss/article/view/2020-3-2-045.