Komilova, N.J., A. Hasanov, and T.G. Ergashev. “Expansions of Kampe De Feriet Hypergeometric Functions”. Journal of Mathematics, Mechanics and Computer Science 122, no. 2 (June 30, 2024): 49–64. Accessed July 3, 2024. https://bm.kaznu.kz/index.php/kaznu/article/view/1503.