Soentoro, E. A., I. Muhardiono, and Y. Suryadi. “Optimization Model of Land Use Planning to Reduce Land Erosion Level: Case Study in the Upper Ciujung River Basin”. Jurnal Teknik Sipil, vol. 26, no. 3, Dec. 2019, pp. 213-22, doi:10.5614/jts.2019.26.3.4.