Muhammad Galadima, A., M. U. Dabai, B. R. Ahmad, and J. I. Umar. “UTILIZATION OF WASTE FOIL AND CARBIDE SLAG AS HETEROGENEOUS CATALYST FOR IN-SITU TRANSESTERIFICATION OF Ricinus Communis (CASTOR SEEDS)”. FUDMA JOURNAL OF SCIENCES, Vol. 6, no. 6, Feb. 2023, pp. 303 -10, doi:10.33003/fjs-2022-0606-1184.