et. al., Shylaja G,. “A New Finite Element Method Using MATLAB for Poisson’s Equation in Axisymmetric Domain”. Turkish Journal of Computer and Mathematics Education (TURCOMAT), vol. 12, no. 15, Apr. 2021, pp. 671-8, https://www.turcomat.org/index.php/turkbilmat/article/view/1963.