A THREE-STEP INTERPOLATION TECHNIQUE WITH PERTURBATION TERM FOR DIRECT SOLUTION OF THIRD-ORDER ORDINARY DIFFERENTIAL EQUATIONS. FJS [Internet]. 2021 Jul. 7 [cited 2025 Sep. 12];5(2):365-76. Available from: http://www.fjsadmin.fudutsinma.edu.ng/index.php/fjs/article/view/556