Audio- and Video-based Biometric Person Authentication First International Conference, AVBPA '97, Crans-Montana, Switzerland, March 12 - 14, 1997, Proceedings - Bigün, Josef; Bigün, Josef; Chollet, Gerard; Chollet, Gerard; Borgefors, Gunilla; Borgefors, Gunilla (Springer Berlin Heidelberg : Imprint: Springer, 1997)