1. A method for epidemiologic registration of malocclusion;Bjork;Acta Odontol Scand,1964
2. Sucking habits and their influence on swallowing pattern and prevalence of malocclusion;Melsen;Eur J Orthod,1979
3. Posterior crossbites in the deciduous and mixed dentitions;Kutin;Am J Orthod,1969
4. An investigation into the prevalence of molar crossbite and some associated aethiological conditions;Day;Dent Pract,1971
5. An epidemiologic study of finger habits in preschool children as related to malocclusion, socioeconomic status, race, sex and size of community;Infante;J Dent Child,1976