@article{viana_steffen_2006,  title={Multimodal vibration damping through piezoelectric patches and optimal resonant shunt circuits},  volume={28},  ISSN={1678-5878},  url={https://doi.org/10.1590/S1678-58782006000300007},  DOI={10.1590/S1678-58782006000300007},  number={3},  journal={Journal of the Brazilian Society of Mechanical Sciences and Engineering},  publisher={Associação Brasileira de Engenharia e Ciências Mecânicas - ABCM},  author={Viana, Felipe Antonio C. and Steffen, Valder},  year={2006},  month={Jul},  pages={293–310} }