TY  - RPRT
TI  - Augmentative and alternative communication interventions for persons with developmental disabilities: narrative review of comparative single-subject experimental studies.
AU  - Ralf W Schlosser
AU  - Jeff Sigafoos
DO  - 10.1016/j.ridd.2004.04.004
UR  - https://pubmed.ncbi.nlm.nih.gov/16360073/
ID  - 16360073
ER  -