Analysis of the voice source in different phonation types: simultaneous high-sped imaging of the vocal fold vibration and glottal inverse filtering. - Hannu Pulakka; Paavo Alku; Svante Granqvist; Stellan Hertegard; Hans Larsson; Anne-Maria Laukkanen; Per-Ake Lindestad; Erkki Vilkman (INTERSPEECH, 2004)