1. Cephalometrics: a perspective;Hixon;Angle Orthod,1972
2. The reliability of head film measurements. 1;Baumrind;Am J Orthod,1971
3. Contribution of pretreatment radiographs to orthodontists’ decision making;Atchison;Oral Surg Oral Med Oral Pathol,1991
4. Comparative cephalometric errors for orthodontic and surgical patients;Wah;Int J Adult Orthod Orthognath Surg,1995
5. Radiographic examinations as an aid to orthodontic diagnosis and treatment planning;Bruks;Swed Dent J,1999