Harahap, N., D. A. Santosa, and N. Gofar. “Exploration and Characterization of Exopolysaccharide-Producing Bacteria from Soil in West Kalimantan for Improving Sandy Soil Aggregation”. Journal of Degraded and Mining Lands Management, vol. 5, no. 4, July 2018, pp. 1373-9, doi:10.15243/jdmlm.2018.054.1373.