SOLVABILITY OF THE THIRD-ORDER KORTEWEG-DE VRIES (KDV) EQUATION BY VARIATIONAL ITERATION AND NEW ITERATIVE METHODS. FJST [Internet]. 2020 Dec. 31 [cited 2024 Nov. 19];6(2):19-26. Available from: https://lafiascijournals.org.ng/index.php/fjst/article/view/173