N. Hidayat, E. Rosaliana, and S. Suhartini, “Influence of powdered Moringa oleifera seeds and natural filter media on the characteristics of tapioca starch wastewater”, Int. J. Recycl. Org. Waste Agric., vol. 2, no. 1, Aug. 2013, doi: 10.1186/2251-7715-2-12.