Yadav, Kailash, and J. P. Jaiswal. “Solution of a Class of Fourth Order Singular Singularly Perturbed Boundary Value Problems by Haar Wavelets Method and Quintic B-Spline Method”. Journal of Informatics and Mathematical Sciences 9, no. 3 (October 31, 2017): 699–710. Accessed May 2, 2024. http://www.rgnpublications.com/journals/index.php/jims/article/view/818.