Matthieu Hébert Nikki Mirghafori Desperately seeking impostors: data-mining for competitive impostor testing in a text-dependent speaker verification system. 365-368 2004 ICASSP (1) https://doi.org/10.1109/ICASSP.2004.1325998 conf/icassp/2004 db/conf/icassp/icassp2004.html#HebertM04