Belubekyan, Mels V., and Ararat A. Papyan. 2020. “VIBRATIONS OF PIEZOELECTRIC LAYER of CLASS 6mm WITH RIGIDLY CLAMPED AND FREE EDGES UNDER INITIAL CONDITIONСS”. Proceedings of the YSU A: Physical and Mathematical Sciences 54 (3 (253). Yerevan, Armenia:146-52. https://doi.org/10.46991/PYSU:A/2020.54.3.146.