1. Fruitless sucking;Campbell;Brit J Dent Sci,1870
2. Thumb-sucking;Chandler;Dent Cosmos,1878
3. Dummy- and finger-sucking habits with special attention to their significance for facial growth and occlusion;Larrson;Sven Tandlak Tidskr,1972
4. Malocclusion and sucking habits of four-year-old children;Kohler;Acta Paediat Scand,1973
5. Prevalence of earlier sucking habits revealed by anamnestic data and their consequences for occlusion at the age of eleven;Helle;Proc Finn Dent Soc,1974