1. Possibilities and Use of Removable Labio-Lingual Spring Appliances;Crozat;Int. J. Orthodontia,1920
2. Orthodontia and Orthopedia of the Face, Philadelphia;Jackson,1904
3. The Erratic Evolution of Orthodontics;Brodie;Am. J. Orthodontics,1961
4. Orthodontic Doctrine and Mechanical Treatment;Adams;Am. J. Orthodontics,1960