@article{paiva_silva_nabeta_chabu_2017,  title={Magnetic topology with axial flux concentration: a technique to improve permanent-magnet motor performance},  volume={16},  ISSN={2179-1074},  url={https://doi.org/10.1590/2179-10742017v16i4957},  DOI={10.1590/2179-10742017v16i4957},  number={4},  journal={Journal of Microwaves, Optoelectronics and Electromagnetic Applications},  publisher={Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo},  author={Paiva, Raul D. and Silva, Viviane Cristine and Nabeta, Silvio Ikuyo and Chabu, Ivan E.},  year={2017},  month={Dec},  pages={881–899} }