1. Manual of voice treatment: Pediatrics through geriatrics;Andrews,2006
2. Speech waveform perturbation analysis: A perceptual–acoustical comparison of seven measures;Askenfelt;Journal of Speech and Hearing Research,1986
3. How loud was it? A calibration system for voice recording in clinical and research applications;Asplund,2004
4. The professional voice user: What is it, are you one and can you maintain it?;Baroody;The Voice Foundation Newsletter,1999
5. Articulatory and phonological impairments: A clinical focus;Bauman-Waengler,2012