1. Problem solving in orthodontics: Goal-oriented treatment strategies;Burstone,2000
2. Force systems from an ideal arch;Burstone;Am J Orthod,1974
3. Contemporary orthodontics;Proffit,2000
4. Mechanics of tooth movement;Smith;Am J Orthod,1984
5. 3-D experimental identification of force systems from orthodontic loops activated for first order corrections;Menghi;Angle Orthod,1999