AbdullahiM., and MusaH. “ENHANCED 3-POINT FULLY IMPLICIT SUPER CLASS OF BLOCK BACKWARD DIFFERENTIATION FORMULA FOR SOLVING STIFF INITIAL VALUE PROBLEMS”. FUDMA JOURNAL OF SCIENCES, Vol. 5, no. 2, July 2021, pp. 120 -27, doi:10.33003/fjs-2021-0501-603.