Ne’matov Shuxrat O’ktamovich, Hamzayev Baxtiyor Amirovich , and Umarov Shokirjon Sheraliyevich, “KOMBINATORIKA MASALALARI VA ULARNI YECHISH USULLARI”, obraz, vol. 60, no. 4, pp. 16–19, Jan. 2025, Accessed: Nov. 07, 2025. [Online]. Available: https://scientific-jl.org/obr/article/view/8377