Darwanto, D., N. Woyanti, P. B. Santosa, H. Sasana, and I. Ghozali. “The Damaging Growth: An Empiric Evidence of Environmental Kuznets Curve in Indonesia”. International Journal of Energy Economics and Policy, vol. 9, no. 5, July 2019, pp. 339-45, https://econjournals.com/index.php/ijeep/article/view/7816.