IbrahimB., ErunganA. C., and Heriyanto.. “Biokinetic Parameter Values of Denitrification Process of Fishery Industrial Wastewater on Differentiated COD/TKN Ratios”. Jurnal Pengolahan Hasil Perikanan Indonesia, Vol. 12, no. 1, May 2010, doi:10.17844/jphpi.v12i1.890.