Team, Support. “Analytic Solutions of a Second-Order Functional Differential Equation: Seksan Pengpit, Theeradach Kaewong, Konvika Kongkul”. Thai Journal of Mathematics 8, no. 3 (December 1, 2010): 491–502. Accessed April 14, 2025. https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/217.