1. Torque and its application to orthodontics;Rauch;Am J Orthod,1959
2. A mechanical evaluation of buccal segment reaction to edgewise torque;Schrody;Angle Orthod,1974
3. A textbook of orthodontia;Strang,1950
4. Technique training in orthodontics;Renfroe,1960
5. Mechanics of tooth movement;Smith;Am J Orthod,1984