1. The characteristics of malocclusion: A new approach to classification and diagnosis;Ackerman;Am. J. Orthod.,1969
2. Medical records, medical education and patient care: The problem-oriented record as a basic tool;Weed,1969
3. Orthodontic Treatment Priority Index;Grainger;National Center for Health Statistics, Series 2, #25,1967
4. Handicapping malocclusion assessment to establish treatment priority;Salzman;Am. J. Orthod.,1968
5. A system for identifying and scoring occlusal disorders: The occlusal index;Summers,1966