1. Current orthodontic concepts and techniques;Graber,1969
2. Rapid bilateral molar distalization;Wilson,1988
3. Non extraction treatment;Cetlin;J Clin Orthod,1983
4. Japanese NiTi coils used to move molars distally;Gianelly;Am J Orthod,1991
5. Distalization of molars with repelling magnets;Gianelly;J Clin Orthod,1988