“Experimental and Numerical Evaluation of the Fundamental Natural ‎Frequency of a Spherical Core Sandwich Structure.‎” (2022) Journal of University of Babylon for Engineering Sciences, 30(3), pp. 61–73. Available at: https://mail.journalofbabylon.com/index.php/JUBES/article/view/4332 (Accessed: 24 June 2025).