1. Arnrup, K, Broberg, AG, Berggren, U, Bodin, L. Treatment outcome in subgroups of uncooperative child dental patients: an exploratory study. Int J Paediatr Dent, 2003;13:304–319.
2. Azrin, NH, Holz WC. Punishment. In Operant Behaviour. WK Honig (Ed) Appleton Century Crofts, New York, USA. 1966, pp 380–447.
3. Bandura A, Blahard EB, Ritter B. Relative efficacy of desensitization and modelling approaches for inducing behavioural affective and attitudinal changes. J Pers Soc Psychol 1969;13(3): 173–99.
4. Barrios, BA, O’Dell, SL. Fears and anxieties. In EJ Mash & RA Barkley (Eds.), Treatment of childhood disorders, New York: Guildford Press, pp 167–221. 1989.
5. Beck, AT, Emery, G. Anxiety disorders and phobias: a cognitive perspective. Basic Books, New York USA, 1985.