Pochernyaev, V. N. “Integrals of Products of Bessel Functions for Applied Electrodynamic Problems”. Ukrains’kyi Matematychnyi Zhurnal 47, no. 4 (April 25, 1995): 566–570. Accessed April 27, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/5459.