M. O. Eloget, S. O. Abuodha, and M. M. O. Winja, “The Effect of Sisal Juice Extract Admixture on Compressive and Flexural Strength of Cement Concrete”, Eng. Technol. Appl. Sci. Res., vol. 11, no. 2, pp. 7041–7046, Apr. 2021.