Melkonyan, A.V., and S.V. Sarkisyan. “PROPAGATION OF A HARMONIC WAVE IN A PLATE WITH SYMMETRIC STRUCTURE”. Proceedings of the YSU A: Physical and Mathematical Sciences 45, no. 2 (225) (April 28, 2011): 45–49. Accessed July 22, 2024. https://journals.ysu.am/index.php/proceedings-phys-math/article/view/vol45_no2_2011_pp045-049.