@article{bertachini_pupo_morettin_martinez_bevilacqua_moret_balen_jacob_2015,  title={Frequency Modulation System and speech perception in the classroom: a
               systematic literature review},  volume={27},  ISSN={2317-1782},  url={https://doi.org/10.1590/2317-1782/20152014103},  DOI={10.1590/2317-1782/20152014103},  number={3},  journal={CoDAS},  publisher={Sociedade Brasileira de Fonoaudiologia},  author={Bertachini, Ana Lívia Libardi and Pupo, Altair Cadrobbi and Morettin, Marina and Martinez, Maria Angelina Nardi and Bevilacqua, Maria Cecília and Moret, Adriane Lima Mortari and Balen, Sheila Andreoli and Jacob, Regina Tangerino de Souza},  year={2015},  month={May},  pages={292–300} }