Egamberdiyev Begzod Abdullayevich, and Akbarova Barno Shuxratovna. “STATISTIKANING NAZARIY ASOSLARI”. Ustozlar uchun 68, no. 1 (March 14, 2025): 769–789. Accessed June 25, 2025. https://scientific-jl.com/uuc/article/view/4894.