Niswati, A., S. Yusnaini, and . Sarno. “Potency of Agroindustrial Wastewaters for Increasing Dissolution of Phosphate Rock Fertilizers”. JOURNAL OF TROPICAL SOILS, vol. 19, no. 1, Apr. 2015, pp. 43-51, doi:10.5400/jts.2014.v19i1.43-51.