Agu, I. V., A. A. Ibiene, and G. C. Okpokwasili. 2019. “Optimization of Biodegradation of Phenol in a Refinery Effluent Treatment Facility”. Recent Advances in Biological Research Vol. 5, September, 119-33. https://stm1.bookpi.org/index.php/rabr-v5/article/view/378.