Javier R. Saeta Javier Hernando Automatic Estimation of a Priori Speaker Dependent Thresholds in Speaker Verification. 70-77 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2688&spage=70 2003 conf/avbpa/2003 AVBPA db/conf/avbpa/avbpa2003.html#SaetaH03