1. Prevalence and aetiology of prolonged dummy and finger sucking habit;Larsson;European Journal of Orthodontics,1985
2. Is digit sucking of significance?;Brenchley;British Dental Journal,1991
3. Feeding and dentofacial development;Nowak;Journal of Dental Research,1991
4. Dental implications of thumb sucking;Curzon;Pediatrics,1974
5. Palanque N. Contribution à l’étude de la succion du pouce. Thèse Chir Dent, Marseille, 1977.