Detection and attenuation of feedback induced howling in hearing aids using subband zero-crossing measures. - Nils Westerlund; Mattias Dahl; Nedelko Grbic (ISSPA, 2005)

Speech enhancement for personal communication using an adaptive gain equalizer. - Nils Westerlund; Mattias Dahl; Ingvar Claesson (Signal Process., 2005)

Counteracting Acoustic Disturbances in Human Speech Communication. - Nils Westerlund (2006)