1. The nature of facial prognathism and its relation to normal occlusion of the teeth;Björk;Am. J. Orthod.,1951
2. Variations in facial relationships, their significance in treatment and prognosis;Downs;Am. J. Orthod.,1948
3. A critical review of clinical cephalometric radiography;Graber;Am. J. Orthod.,1954
4. A cephalometric study of facial types and occlusion classes and relation between them in Finnish children;Haavikko,1974
5. Clinical cephalometric standards: A radiographic study of 12-year-old British girl;Harkness;Orthodontist (Lond.),1972