1. Incidence and effect of premature loss of deciduous teeth;Unger;Int J Orthod,1938
2. Prevention of malocclusion;Seipel;Dent Rec,1942
3. Effects of premature loss of deciduous molars;Northway;Angle Orthod,1984
4. Dentofacial changes produced by extraoral force in the Macaca irus;Kambara;Int J Orthod,1977
5. Bone changes associated with tooth movement: a histological study of the effect of age and sex in the rabbit and guinea pig;Storey;Aust J Dent,1955