1. Gorlin, R.J., and Pindborg, J.J. Syndromes of the Head and Neck, New York, Blakiston, 1964, p. 12, 79, 83, 350, 355, 552.
2. Talbot, E.S. Etiology of Osseous Deformities of the Head, Face, Jaws, and Teeth , ed. 3. Chicago, Ill. Keener, 1894, p. 72.
3. Palatometer
4. Statistical inference.