Armah, E. A., H. A. Koffi, and J. K. A. Amuzu. “Compressive and Flexural Strengths of Concrete Containing Ground Palm Kernel Shells As Partial Replacement of Cement”. Journal of Modern Materials, vol. 7, no. 1, May 2020, pp. 7-16, doi:10.21467/jmm.7.1.7-16.