1. Risk assessment: the philosophy underlying radiation protection;Smith;Int Dent J,1987
2. The DigiGraph work station. Part 1. Basic concepts;Chaconas;J Clin Orthod,1990
3. The DigiGraph work station. Part 2. Clinical management;Alexander;J Clin Orthod,1990
4. Anthropometry of the head and face in clinical practice;Farkas,1994
5. Facial three-dimensional morphometry;Ferrario;Am J Orthod Dentofacial Orthop,1996