1. Training of mental health professionals through the use of the bug-in-the-ear;Boylston;American Journal of Psychiatry,1972
2. Modifying problem behaviors in mother-child interaction, standardized laboratory situations;Hanf,1968
3. A two-stage program for modifying maternal controlling during mother-child (M-C) interaction;Hanf,1969
4. An inexpensive, easily built “bug-in-the-ear”/intercom system for training therapists in behavior modification techniques;Morris;Behavior Therapy,1974
5. A low-cost “bug-in-the-ear” sound system for modification of therapist, parent, and patient behavior;Stumphauzer;Behavior Therapy,1971