Hosseinzadeh, Amir, and Behzad Davari. “Examining the Effects of Financial and Nonfinancial Indices on Function of Social Security Organization”. International Review of Management and Marketing, vol. 7, no. 4, Oct. 2017, pp. 91-98, https://econjournals.net.tr/index.php/irmm/article/view/5444.