Melkonyan, A. and Sarkisyan, S. 2011. PROPAGATION OF A HARMONIC WAVE IN A PLATE WITH SYMMETRIC STRUCTURE. Proceedings of the YSU A: Physical and Mathematical Sciences. 45, 2 (225) (Apr. 2011), 45–49. DOI:https://doi.org/10.46991/PYSU:A/2011.45.2.045.