Shahbaz, M., A. N. M. Wahid, and R. Kalim. “Is Inflation Regressive or Progressive? Long Run & Short Run Evidence from Pakistan”. International Journal of Management Studies, vol. 17, no. 2, Dec. 2010, pp. 47-72, https://e-journal.uum.edu.my/index.php/ijms/article/view/9999.