1. The integumental profile;Burstone;Angle Orthod,1958
2. The influence of orthodontic treatment on facial growth and development;Ricketts;Am J Orthod,1960
3. Esthetics, environment and the law of lip relation;Ricketts;Am J Orthod,1968
4. A concept of facial esthetics;Peck;Angle Orthod,1970
5. Reproducibility of cephalometric landmarks and errors of measurement of cephalometric cranial distances;Midtgard;Angle Orthod,1974