Josef Bigün Fabrizio Smeraldi Audio- and Video-Based Biometric Person Authentication, Third International Conference, AVBPA 2001 Halmstad, Sweden, June 6-8, 2001, Proceedings AVBPA Lecture Notes in Computer Science 2091 Springer 2001 3-540-42216-1 db/conf/avbpa/avbpa2001.html