1. Bonwill WGA. Geometric and mechanical laws of articulation. Trans Odont Soc Penna 1885;119-33.
2. Angle EH. Treatment of malocclusion of the teeth and fractures of the maxillae: Angles Syst. Philadelphia: S. S. White Dental Manufacturing Co., .1907. p. 21-4.
3. Ideal arch form;Chuck;Angle Orthod,1932
4. The ideal form of the human dental arcade, with some prosthetic application;Macconaill;Dent Rec (London),1949
5. Dental arch form related with intraoral forces: PR=C;Brader;Am J Orthod,1972