@article{oliveira filho_sguarezi filho_ruppert_2012,  title={A Three-phase to three-phase matrix converter prototype},  volume={23},  ISSN={0103-1759},  url={https://doi.org/10.1590/S0103-17592012000300001},  DOI={10.1590/S0103-17592012000300001},  number={3},  journal={Sba: Controle & Automação Sociedade Brasileira de Automatica},  publisher={Sociedade Brasileira de Automática},  author={Oliveira Filho, Milton E. de and Sguarezi Filho, Alfeu J. and Ruppert, Ernesto},  year={2012},  month={May},  pages={247–262} }