Team, S. “Numerical Solution of Third Order Singularly Perturbed Boundary Value Problems Using Exponential Quartic Spline: Arshad Khan, Pooja Khandelwal”. Thai Journal of Mathematics, vol. 17, no. 3, Dec. 2019, pp. 663-72, https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/918.