1. Changes in the human face brought about by development;Hellman;Int J Orthod Oral Surg Radiogr,1927
2. The face in its developmental career;Hellman;Dent Cosmos,1935
3. A comparative analysis of Class II treatments;Johnston,1986
4. Changes in dentofacial structures in untreated Class II division 1 and normal subjects: a longitudinal study;Bishara;Angle Orthod,1997
5. Growth and the Class II patient: rendering unto Caesar;Johnston;Semin Orthod,1998