Stella O. Olubodun and  George E. Eriyamremu,  Prediction of Metals Available to Maize Seedlings in Crude Oil Contaminated Soil.   journal   = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2016, vol. 111(3). 145 - 150
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10003816.