1. The Face in Profile;Björk,1947
2. The Face of the Normal Child;Broadbent;Angle Orthodontist,1937
3. A New Line of Reference for the Study of Lateral Facial Teleradiographs;De Coster;Am. J. Orthodontics,1953
4. A Critical Review of Clinical Cephalometric Radiography;Graber;Am. J. Orthodontics,1954
5. Roentgenographic Cephalometrics;Moore,1959