@misc{Yang_J._S._A_1992, author={Yang, J. S.}, volume={44}, number={4}, copyright={Creative Commons Attribution BY 4.0 license}, journal={Archives of Mechanics}, address={Warszawa}, howpublished={online}, year={1992}, publisher={Polish Scientific Publishers IFTR}, language={eng}, title={A few properties of the resonant frequencies of a piezoelectric body}, type={Text}, URL={http://www.rcin.org.pl/Content/68367/PDF/WA727_18038_44-4-1992_AMS_Yang-09.pdf}, keywords={Mechanika stosowana - czasopisma [KABA]}, }