Ahmadi, Lida Moazen, Hassan Fahim Devin, Zahrasadat Mirzazadeh, and Hossein Peymanizad. 2022. “Analytical Study of the Economic Effects of Sports for Seniors in Iran”. SPORT TK-EuroAmerican Journal of Sport Sciences 11 (February):7. https://doi.org/10.6018/sportk.512751.