“Derivation of Eigen Value Equation by Using Equivalent Transmission Line Method for the Case of Symmetric Asymmetric Planar Slab Waveguide Structure”. Journal of International Academy of Physical Sciences 15, no. 1 (March 15, 2011): 113–122. Accessed October 23, 2026. http://www.iaps.org.in/journal/index.php/journaliaps/article/view/590.