Seema Sharma, R. Lal, and Neelam. “Free Transverse Vibrations of Non-Homogeneous Circular Plates of Linearly Varying Thickness”. Journal of International Academy of Physical Sciences 15, no. 5 (October 30, 2011): 187–200. Accessed May 5, 2025. https://www.iaps.org.in/journal/index.php/journaliaps/article/view/644.