NUMERICAL SOLUTIONS OF THIRD ORDER FREDHOLM INTEGRO DIFFERENTIAL EQUATION VIA LINEAR MULTISTEP-QUADRATURE FORMULAE. FJS [Internet]. 2023 Jun. 3 [cited 2025 Sep. 12];7(3):33-44. Available from: http://www.fjsadmin.fudutsinma.edu.ng/index.php/fjs/article/view/1785