Pujlestari, E. S., S. Hudiyono, and S. S. Moersidik. “Environmental Impact of Metals Leaching Generated from Long Term Coal Ash Disposal Placement of More Than 10 Years Periods”. Asian Journal of Applied Sciences, vol. 5, no. 6, Dec. 2017, https://ajouronline.com/index.php/AJAS/article/view/5127.