Abdul Hakam, Diki Febriansyah, Bayu Martanto Adji, and Junaidi. “LIQUEFACTION MAPPING PROCEDURE DEVELOPMENT: DENSITY AND MEAN GRAIN SIZE FORMULATIONS”. GEOMATE Journal, vol. 18, no. 70, June 2020, pp. 155-61, https://geomatejournal.com/geomate/article/view/633.