Zia, S., H. Amir, S. Iftikhar, and K. Bilal. “Trade Liberalization and Economic Welfare: A Case of Pakistan”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 31, no. 1, Jan. 2017, pp. 75-100, https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/6625.