zarinejad, B. (2021). Investigating the factors affecting the participation of the elderly in physical activity and sports. Ethics Committee of Sport Sciences Research Institute, (), -.

zarinejad, B. . "Investigating the factors affecting the participation of the elderly in physical activity and sports", Ethics Committee of Sport Sciences Research Institute, , , 2021, -.

zarinejad, B. (2021). 'Investigating the factors affecting the participation of the elderly in physical activity and sports', Ethics Committee of Sport Sciences Research Institute, (), pp. -.

B. zarinejad, "Investigating the factors affecting the participation of the elderly in physical activity and sports," Ethics Committee of Sport Sciences Research Institute, (2021): -,

zarinejad, B. Investigating the factors affecting the participation of the elderly in physical activity and sports. Ethics Committee of Sport Sciences Research Institute, 2021; (): -.