P. Omotainse, O. Obamuyiwa, M. Busari, U. Igba, O. Dairo, and S. Jekayinfa, “COMPARISON OF THE EFFECT OF PALM KERNEL FIBRE ASH ON THE COMPRESSIVE EARTH STABILISED BLOCK”, laujet, vol. 17, no. 1, pp. 167-174, Jul. 2023.