1. The role of cephalometrics in orthodontic case analysis and diagnosis;Downs;Am J Orthod,1952
2. The use of cephalometrics as an aid to planning and assessing orthodontic treatment;Steiner;Am J Orthod,1960
3. The Frankfort mandibular incisor angle (FMIA) in orthodontic diagnosis, treatment planning and prognosis;Tweed;Angle Orthod,1954
4. Planning treatment on the basis of the facial pattern and an estimate of its growth;Ricketts;Angle Orthod,1957