1. Goldstein, M.S.: Oral rehabilitation of the adult. Chicago Dental Society 33 (1957), 11.
2. Johnson, E.L.: Compromise treatment in an adult. Amer. J. Orthodont. (1971), 130–146.
3. King, E.: Relapse of orthodontic treatment. Angle Orthodont. 44 (1974), 300–315.
4. Markovic, M.: Bioloska priroda orthodoncije. 1976, S. 259.
5. Reitan, K.: Tissue reaction as relation to the age factor. Dental Record 74 (1954), 74.