1. Crown diameters of corresponding tooth groups in the deciduous and permanent dentition;Moorrees;J Dent Res,1962
2. Available space for the incisors during dental development—a growth study based on physiologic age;Moorrees;Angle Orthod,1965
3. Mixed-dentition case analysis—estimating size of unerupted permanent teeth;Ballard;Am J Orthod,1947
4. Estimation of the sizes of unerupted cuspid and bicuspid teeth;Hixon;Angle Orthod,1958
5. Handbook of orthodontics for the student and general practitioner;Moyers,1973