1. Mandibular incisor crowding in completed cases;Lombardi;Am J Orthod,1972
2. An index for assessing tooth shape deviations as applied to the mandibular incisors;Peck;Am J Orthod,1972
3. The mandibular dental arch. Part IV. Prediction and prevention of lower anterior relapse;Keene;Angle Orthod,1979
4. Stability and Relapse of Dental Arch Alignment. Retention and Long-Term Stability;Little,1993
5. A longitudinal study of dental and skeletal parameters associated with stability of orthodontic treatment;Franklin,1995