Articles:

Demographics of Preschoolers Who Require AAC  by Janice Light and Cathy Binger.  Language, Speech, and Hearing Services in Schools Vol.37 200-208 July 2006. doi:10.1044/0161-1461(2006/022)

Enhancing participation in employment through AAC technologies. Assistive Technologies, 14(1): 58-70McNaughton, D., & Nelson Bryen, D. (2002, Summer).  

Web Sites:

Communication Facts: Special Populations: Augmentative and Alternative Communication - 2008 Edition - http://www.asha.org/research/reports/aac.htm

TASH - RESOLUTION ON AUGMENTATIVE AND ALTERNATIVE COMMUNICATION METHODS AND THE RIGHT TO COMMUNICATE