Zohra Yermeche Nedelko Grbic Ingvar Claesson Blind Subband Beamforming for Speech Enhancement of Multiple Speakers. 828-831 2006 conf/apccas/2006 APCCAS http://dx.doi.org/10.1109/APCCAS.2006.342149 db/conf/apccas/apccas2006.html#YermecheGC06