Singh, F., and R. C. Varma. “Application of E-Operator to Evaluate a Definite Integral and Its Application in Heat Conduction”. The Journal of the Indian Mathematical Society 36, no. 3-4 (December 1, 1972): 325–332. Accessed May 3, 2024. https://informaticsjournals.com/index.php/jims/article/view/16675.