1. A Consideration of the Physiological Background of Mandibular Posture and Movement;Ballard;D. Practitioner & D. Record,1955
2. Sutural Growth of the Upper Face Studied by the Implant Method;Björk;Tr. European Orthodont. Soc.,1964
3. Threshold and Optimum Force Values for Maxillary Anterior Tooth Movement;Burstone;J. D. Res.,1961
4. Extraoral Force: Facts and Fallacies;Graber;Am. J. Orthodontics,1955
5. Effects of Hypercementosis on the Movability of Teeth During Orthodontic Treatment;Humerfelt;Angle Orthodontist,1966