A NEW 2-POINT DIAGONALLY IMPLICIT VARIABLE STEP SIZE SUPER CLASS OF BLOCK BACKWARD DIFFERENTIATION FORMULA FOR SOLVING FIRST ORDER STIFF INITIAL VALUE PROBLEMS. FJS [Internet]. 2025 Jul. 22 [cited 2025 Sep. 17];9(7):275-82. Available from: http://162.254.38.185/index.php/fjs/article/view/3799