J. I. Aguwa and  S. Sadiku and  M. Abdullahi,  Harnessing Nigeria's Forestry Potential for Structural Applications: Structural Reliability of Nigerian Grown Opepe Timber.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2015, vol. 106(10). 3658 - 3666
    [viewed 28 March 2020]. Available from: https://publications.waset.org/pdf/10003822.