1. The bonded lingual retainer and multiple spacing of anterior teeth;Zachrisson;J Clin Orthod,1983
2. Stabilization of retainer wire for direct bonding;Meyers;J Clin Orthod,1982
3. The bonded lingual retainer;Lubit;J Clin Orthod,1979
4. Maturation of untreated normal occlusions;Sinclair;Am J Orthod,1983
5. Changes in the dental arches and dentition between 25 and 45 years of age;Bishara;Angle Orthod,1996