1. Harmonious development and the divine proportion;Torres;Divulg Cult Odontol,1970
2. Dental esthetics and the golden proportion;Levin;J Prosthet Dent,1978
3. The biologic significance of the divine proportion and Fibonacci series;Ricketts;Am J Orthod,1982
4. Geometric considerations in anterior dental aesthetics: Restorative principles;Ahmad;Pract Periodontics Aesthetic Dent,1998
5. How to take the guesswork out of dental esthetics and function;Shoemaker;Fla Dent J,1987