1. Semantography;Bliss,1965
2. Blissapple. (1983). Madison, WI: Trace Research and Development Center for the Severely Communicatively Handicapped.
3. Blissymbolics,1982
4. Computer-aided speech production and training (CASPT);Cooper,1984
5. Maple sugar and apples: A yummy way to learn;Durkee;Softalk,1982