(J. GEOSCIENCE ENG. ENVIRON. TECHNOL.), JGEET. Back Cover Vol 03 No 04 2018. Journal of Geoscience, Engineering, Environment, and Technology, [S.l.], v. 3, n. 4, dec. 2018. ISSN 2541-5794. Available at: <http://journal.uir.ac.id/index.php/JGEET/article/view/2504>. Date accessed: 21 sep. 2019.