Oriola F.O.P, G. Moses, and J. O. Afolayan. “EFFECTS OF COMBINING METAKAOLIN AND CEMENT KILN DUST AS CEMENT REPLACEMENT MATERIAL IN CONCRETE”. Academy Journal of Science and Engineering, vol. 9, no. 1, Apr. 2022, pp. 101-1, https://ajse.academyjsekad.edu.ng/index.php/new-ajse/article/view/207.