Nweke, C. O., C. C. Ike, and C. O. Ibegbulem. “Toxicity of Quaternary Mixtures of Phenolic Compounds and Formulated Glyphosate to Microbial Community of River Water”. Ecotoxicology and Environmental Contamination, vol. 11, no. 1, Sept. 2016, pp. 63-71, doi:10.5132/eec.2016.01.09.