Tirtayasa, Satria, A. Akrim, Ade Gunawan, Emilda Sulasmi, and Hastin Umi Anisah. “Significance of Economic Activities in Environmental Protection: Evidence from a Panel of 4-ASEAN Economies”. International Journal of Energy Economics and Policy 11, no. 2 (February 1, 2021): 420–426. Accessed December 23, 2024. https://mail.econjournals.com/index.php/ijeep/article/view/10831.