“ON THE ELZAKI SUBSTITUTION AND HOMOTOPY PERTUBATION METHODS FOR SOLVING PARTIAL DIFFERENTIAL EQUATION INVOLVING MIXED PARTIAL DERIVATIVES ”. FUDMA JOURNAL OF SCIENCES 5, no. 3 (November 2, 2021): 159–168. Accessed September 2, 2025. https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/668.