Xudoyberdiyev Hasan O‘ktam o‘g‘li, “BIR NECHA O‘ZGARUVCHILI KO‘PHADLAR. SIMMETRIK KO‘PHADLAR VA ULAR HAQIDAGI TEOREMALAR ”, journal, vol. 69, no. 4, pp. 239–243, May 2026, Accessed: Jun. 06, 2026. [Online]. Available: https://journalss.org/index.php/tal/article/view/30977