1. Boyd RL 1999 JohnValentine John Valentine Mershon Lecture 1999
2. The Invisalign system in adult orthodontics: mild crowding and space closure cases;Boyd;J Clin Orthod,2000
3. Three-dimensional diagnosis and orthodontic treatment of complex malocclusions with the Invisalign appliance;Boyd;Semin Orthod,2001
4. Orthodontic treatment of a mildly crowded malocclusion using the Invisalign system;Vlaskalic;Aust Orthod J,2001
5. Clinical evolution of the Invisalign appliance;Vlaskalic;J Calif Dent Assoc,2002