Mandal, S., D. Singh, and M. M. Panja. “Approximation of the Modied Error Function by Using Perturbative and Sinc Collocation Methods”. Recent Studies in Mathematics and Computer Science Vol. 1, Mar. 2020, pp. 89-04, https://stm1.bookpi.org/index.php/rsmcs-v1/article/view/1138.