1. Vibration as a reinforcer with a profoundly retarded child;Bailey;Journal of Applied Behavior Analysis,1969
2. Sensory reinforcement in the operant conditioning of nonambulatory profoundly mentally retarded adolescents;Dewson,1981
3. Visual, auditory, and vibratory stimulation as reinforcers for profoundly retarded children;Fehr;Rehabilitation Psychology,1979
4. Design and analysis of time-series experiments;Glass,1975
5. Student preference of sensory reinforcers;Gutierrez-Griep;Education and Training of the Mentally Retarded,1984