1. Mechanics of tooth movement;Smith;Am J Orthod,1984
2. Common sense mechanics;Mulligan;J Clin Orthod,1979
3. Some engineering principles of possible interest to orthodontists;Fish;Dent Cosmos,1917
4. A mechanical appraisal of the Kloehn extraoral assembly;Oosthuizen;Angle Orthod,1973
5. A concept and classification of centers of rotation and extraoral force systems;Worms;Angle Orthod,1973