Kruchinin, Dmitry V., Yuriy V. Shablya, Vladimir V. Kruchinin, and Alexander A. Shelupanov. “Properties of a Composition of Exponential and Ordinary Generating Functions”. Communications in Mathematics and Applications 9, no. 4 (December 25, 2018): 705–711. Accessed November 24, 2024. http://rgnpublications.com/journals/index.php/cma/article/view/1044.