References
- Andrews, L. F. (1972) Six keys to normal-occlusion. American Journal of Orthodontics, 62, 296–309.
- Dickson, G. C. (1974) Long-term effects of malocclusion. British Journal of Orthodontics, 1, 63–68.
- Holdoway, R. A. (1983) A soft tissue cephalometric analysis and its use in orthodontic treatment, American Journal of Orthodontics, 84, 1–28.
- Little, R. M., Wallen, T. R., Riedel, R. A. (1981) Stability and relapse of mandibular anterior alignment—first premolar extraction cases treated by traditional edgewise, American Journal of Orthodontics, 80, 349–365.
- Mills, J. R. E. (1966) The long term results of the proclination of lower incisors, British Dental Journal, 120, 355–363.
- Mills, J. R. E. (1968) The stability of the lower labial segment. British Journal of Orthodontics, 118, 293–305.