A FOUR-STEP BLOCK HYBRID BACKWARD DIFFERENTIATION FORMULAE FOR THE SOLUTION OF GENERAL SECOND ORDER ORDINARY DIFFERENTIAL EQUATION. FUDMA JOURNAL OF SCIENCES, [S. l.], v. 9, n. 4, p. 239–244, 2025. DOI: 10.33003/fjs-2025-0904-3338. Disponível em: http://162.254.38.185/index.php/fjs/article/view/3338. Acesso em: 17 sep. 2025.