1. Habit reversal: a method of eliminating nervous habits and tics;Azrin;Behaviour Research and Therapy,1973
2. Description, practical application and results of the Azrin and Nunn technique for modification of nervous habits;Bayes;Quaderns Cuadernos de Psicologia,1983
3. Behaviour therapy of fingernail biting: assertive training and self-control;Christmann;Praxis der Kinderpsychologie und Kinderpsychiatrie,1976
4. Covert sensitization and information in the reduction of nailbiting;Davidson;Behaviour Therapy,1976
5. A comparison of relaxation training and competing response training to eliminate hairpulling and nailbiting;De Luca;Journal of Behaviour Therapy and Experimental Psychiatry,1984