1. Straight wire the concept and appliance;Andrews,1989
2. The new torqued appliance;Creekmore;J Clin Orthod,1973
3. Roth straight wire appliance philosophy;Roth,1979
4. Bioprogressive therapy as an answer to orthodontic needs. Part I;Ricketts;AM J orthod,1976
5. The level anchorage system;Root,1986