1. Research Into the Physical History of Mankind;Prichard,1836
2. Some Observations on the Use of the Term Prognathism;Fisher;J. Am. Dent. A.,1949
3. The Face in Profile;Björk,1947
4. Some Biological Aspects of Prognathism and Occlusion of Teeth;Björk;Acta Odontol. Scandinav.,1950