1. Racial differences in dimensional traits of the human face;Richardson;Angle Orthod,1980
2. Cephalometric standards for American Negro children;Alexander;Am J Orthod,1978
3. A comparison of cephalofacial relationship;Altemus;Angle Orthod,1960
4. Longitudinal cephalometric standards from 5 years of age to adulthood;Bishara;Am J Orthod,1981
5. A cephalometric study for pre-school children;Bugg;J Dent Child,1973