Zunnunov, A.O., and R.E. Esbosinov. 2019. “BIRLIK KUBDAGI SODDA DIFFERENSIAL O’YINLARDA QUVISH MASALASI”. ILIM Hám JÁMIYET, no. 3 (July): 22-26. https://journal.ndpi.uz/ss/article/view/2019-3-010.