Belubekyan, M.V., and V.M. Belubekyan. 2013. “SURFACE WAVES IN PIEZOACTIVE ELASTIC SYTEM OF A LAYER ON A SEMI-SPACE”. Proceedings of the YSU A: Physical and Mathematical Sciences 47 (3 (232). Yerevan, Armenia:45-48. https://doi.org/10.46991/PYSU:A/2013.47.3.045.