Utemuratova Gulnaraxan Xojaniyazovna,. “Modeling of Investment Activity in the Development of Public-Private Partnerships in the Service Sector”. American Journal of Economics and Business Management 6, no. 5 (May 1, 2023): 22–32. Accessed July 12, 2025. https://www.globalresearchnetwork.us/index.php/ajebm/article/view/2187.