LODHI, Ram Kishun, and Hradyesh Kumar MISHRA. “Quintic B-Spline Method for Numerical Solution of Fourth Order Singular Perturbation Boundary Value Problems”. Studia Universitatis Babeș-Bolyai Mathematica 63, no. 1 (March 30, 2018): 141–151. Accessed February 5, 2025. https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/1984.