Jayawardane, Chamathka, and Jagath Chaminda Edirisinghe. 2014. “Environmental Stringency and Dirty Exports: An Empirical Analysis”. International Journal of Economic Practices and Theories 4 (6):1018-23. http://ijept.eu/index.php/ijept/article/view/Environmental_Stringency_and_Dirty_Exports_an_Empirical_Analys.