Team, Support. 2020. “Positive Solution of Boundary Value Problem Involving Fractional Pantograph Differential Equation: Piyachat Borisut, Chaiwat Auipa-Arch”. Thai Journal of Mathematics 19 (3):1056–1067. https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/1216.