Paras, M. K., and J. Rai. “Propagation of ELF Radiation from RS-LC System and Red Sprites in Earth-Ionosphere Waveguide”. Advanced Electromagnetics 1, no. 2 (October 14, 2012): 96–102. Accessed April 4, 2026. https://www.aemjournal.org/index.php/AEM/article/view/105.