1. Radiographic cephalometry: from basics to videoimaging;Jacobson,1995
2. Soft tissue cephalometric analysis for orthognathic surgery;Legan;J Oral Surg,1980
3. A soft-tissue cephalometric analysis and its use in orthodontic treatment planning;Holdaway;Am J Orthod,1983
4. Soft tissue cephalometric norms in Japanese adults;Alcalde;Am J Orthod Dentofacial Orthop,2000
5. Ethnic differences in the soft tissue profile of Korean and European-American adults with normal occlusions and well-balanced faces;Hwang;Angle Orthod,2002