1. Evaluation of frictional forces in the 0.022 × 0.028 edgewise bracket in vitro;Andreasen;J. Biochem.,1970
2. Friction and width of brackets;Kamiyama;J. Jpn. Orthod. Soc.,1973
3. Frictional forces of ligated plastic and metal edgewise brackets;Riley;J. Dent. Res.,1979
4. Edgewise orthodontics;Thurow,1972
5. The Edgelok bracket;Gottlieb;J. Clin. Orthod.,1972