1. Classification of malocclusion;Angle;Dental Cosmos,1899
2. Biological basis for orthodontic relapse;Thilander;Semin Orthod,2000
3. Contemporary orthodontics;Proffit,2007
4. Making facial muscles our allies in treatment and retention;Rogers;Dental Cosmos,1922
5. Growing jaws for fun and profit: a modest proposal;Johnston,1999