Gill, Fozia Latif, K Kuperan Viswanathan, and Mohd Zaini Abdul Karim. “The Critical Review of the Pollution Haven Hypothesis (PHH)”. International Journal of Energy Economics and Policy 8, no. 1 (January 24, 2018): 167–174. Accessed April 24, 2024. https://www.econjournals.com/index.php/ijeep/article/view/5678.