1. Anleitung zum Operationskurs am Phantommodell;Boretzky;Dtsch. Zahnaerztl. Z.,1975
2. The use of a model for teaching oral surgery;Hars;J. Oral Surg.,1972
3. Teaching models;Walker;Br. Dent. J.,1958
4. Models for teaching oral surgery;Walker;Dent. Pract.,1964
5. Models for teaching minor oral surgery;Whitehead;J. Dent.,1973