Zeb, Anwar, Azad Haider, Jawad Hussain, Mudassir Zaman Khan, Farzana Shaheen, and Muhammad Israr. 2017. “Performance Evaluation of Pakistan’s Oil & Gas Regulatory Authority”. International Journal of Energy Economics and Policy 7 (6):72-77. https://www.econjournals.com/index.php/ijeep/article/view/5445.