Johan, A., P. P. Rahardjo, and B. Widjaja. “Evaluating Liquefaction Phenomenon Of Silty Sand Using Piezocone Penetration Test (CPTu)”. UKaRsT, vol. 6, no. 1, Apr. 2022, pp. 1-15, doi:10.30737/ukarst.v6i1.2118.