CO, Nweke, and Okpokwasili GC. 2012. “Kinetics of Dose-Response Relationship of Heavy Metals With Dehydrogenase Activity in Wastewater Bacteria”. Journal of Research in Biology 2 (4), 392-402. https://ojs.jresearchbiology.com/ojs1/index.php/jrb/article/view/230.