Rona Reski, M Natsir Djide, Tri Harianto, Irwan Ridwan Rahim. “Design of an Impermeable Layer for the Landfill Final Cover With Biogrouting Method”. Design Engineering, no. 1, Dec. 2022, pp. 4671 -87, http://www.thedesignengineering.com/index.php/DE/article/view/9723.