@INPROCEEDINGS {5493,
author={C.  Ferreira and B. Borges},
doi={},
booktitle={IEEE Power Electronics Specialists Conf. - PESC},
title={New Notch Low Pass Filter for Use in Switching Audio Amplification},
year={2008},
month={June},
volume={in publication},
pages={  1905-  1911} 
}