Jafri, M., I. Iswan, M. Rizki, and G. Susilo. “Slope Stability Analysis in Ulubelu Lampung Using Computational Analysis Program”. Civil and Environmental Science Journal (CIVENSE), vol. 3, no. 1, Mar. 2020, pp. 51-59, doi:10.21776/ub.civense.2020.00301.6.