Authors: Holmes, RJ Oates, JM Phyland, DJ Hughes, AJ

Citation: Rj. Holmes et al., Voice characteristics in the progression of Parkinson's disease, INT J LAN C, 35(3), 2000, pp. 407-418

Authors: Phyland, DJ Oates, J Greenwood, KM

Citation: Dj. Phyland et al., Self-reported voice problems among three groups of professional singers, J VOICE, 13(4), 1999, pp. 602-611