1. A soft-tisue cephalometric analysis and its use in orthodontic treatment planning;Holdaway;Am J Orthod,1983
2. The integumental profile;Burstone;Am J Orthod,1958
3. An orthodontic view of dentofacial esthetics;Morris;Compend Contin Educ Dent,1994
4. An orthodontic view of dentofacial esthetics;Morris;Compend Contin Educ Dent,1994
5. Change in lip vermilion height during orthodontic treatment;Perkins;Am J Orthod Dentofac Orthop,1993