Nurhamidah, Nurhamidah, Bujang Rusman, Bambang Istijono, Abdul Hakam, and Ahmad Junaidi. 2018. “Monitoring and Empirical Modelling for Organic Soil Subsidence Estimation in Sumatra”. International Journal on Advanced Science, Engineering and Information Technology 8 (5):2263-68. https://doi.org/10.18517/ijaseit.8.5.3515.