BOZOROVA LAYLO NASILLOYEVNA, “MAKTAB MATEMATIKA KURSIDA KOMBINATORIKANING ASOSIY QOIDASI MAVZUSINI O’QITISHNING O’ZIGA XOS XUSUSIYATLARI ”, ta’lim, vol. 43, no. 2, pp. 181–186, Apr. 2025, Accessed: Jul. 05, 2025. [Online]. Available: https://scientific-jl.com/tal/article/view/9194