Khan, U. S., A. Qayyum, I. U. Khan, and M. Ahmed. “Impact of Firms’ Characteristics on Total Factor Productivity: Evidence from Pakistan”. Journal of Contemporary Macroeconomic Issues, vol. 5, no. 1, June 2024, pp. 126-41, https://ojs.scekr.org/index.php/jcmi/article/view/142.