1. Tooth size and class distinction;Beresford;Dent. Pract.,1969
2. Variations in the secular changes in the teeth and dental arches;Lavelle;Angle Orthod.,1973
3. Crowding of mandibular incisors;Fastlicht;Am. J. Orthod.,1970
4. Orthodontic aspects of dental anthropology;Peck;Angle Orthod.,1975
5. Factors that affect the alignment of the mandibular incisors: A longitudial study;Sanin;Am. J. Orthod.,1973