Ahmed, Ibrahim, A. I. Ma’Ali, A. A. Agboluaje, and Y. D. Jikantoro. 2025. “A FOUR-STEP BLOCK HYBRID BACKWARD DIFFERENTIATION FORMULAE FOR THE SOLUTION OF GENERAL SECOND ORDER ORDINARY DIFFERENTIAL EQUATION”. FUDMA JOURNAL OF SCIENCES 9 (4), 239 -44. https://doi.org/10.33003/fjs-2025-0904-3338.