Xolliyev Diyor Navruz o'g'li. “PIRAMIDA HOSIL QILGAN HOLDA ULANGAN ZANJIRLARGA OID MASALALARNI YECHISHDA KIRXGOF QOIDALARINI QO’LLASH”. JOURNAL OF NEW CENTURY INNOVATIONS 77, no. 1 (May 16, 2025): 92–97. Accessed August 2, 2025. https://scientific-jl.com/new/article/view/14028.