1. Behavior therapy with a case of nervous anorexia;Lang,1965
2. Case report: Avoidance conditioning therapy of an infant with chronic ruminative vomiting;Lang;J. abnorm. Psychol.,1969
3. A Psychological Approach to Abnormal Behavior;Ullmann,1969
4. Noxious conditioning as a treatment for rumination;White;Ment. Retard.,1967
5. A note on apparent extinction of the vomiting behavior of a retarded child;Wolz,1965