1. Evolutionary trends in orthodontics, past, present and future;Tweed;Am J Orthod,1953
2. Treated cases;Watkins;Intern J Orthodontia and Dentistry for Children,1934
3. The limitations of orthodontic treatment;Nance;Am J Orthod,1947
4. Behaviour of normal and abnormal facial growth patterns;Brodie;Am J Orthod Surg,1941