- Achuba, F. I.., et all. "Efect of abattoir waste water on metabolic and antioxidant profles of cowpea seedlings grown in crude oil contaminated soil." International Journal of Recycling of Organic Waste in Agriculture, vol. 7, no. 1, pp. 59 - 66, https://doi.org/10.1007/s40093-017-0190-6