1. American Dental Association Specification No. 7 for dental wrought gold wire alloy;American Dental Association,1964
2. ANSI/ADA Specification No. 32 for Orthodontic wires not containing precious metals;JADA,1977
3. Evaluation of orthodontic bond strength: The urgent need for standardization;Rekow;J Dent Mater,1996
4. Frictional forces and surface topography of a new ceramic bracket;Tanne;Am J Orthod Dentofacial Orthop,1994
5. Relative kinetic frictional forces between sintered stainless steel brackets and orthodontic wires;Vaughan;Am J Orthod Dentofacial Orthop,1995