Badnilcar, S.L., N. Shanmugam, and V.R.K. Murthy. “Resonant Frequencies of Whispering Gallery Modes of Dielectric Resonator”. Defence Science Journal 51, no. 2 (January 1, 2002): 189-193. Accessed April 25, 2024. https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/2229.