1. Extra-orale tractie;Duterloo,1981
2. Functional orthopedic appliance;Isaacson,1990
3. Mandibular growth and Class II treatment;Marschner;Angle Orthod,1966
4. Cephalometric evaluation of treatment effect on Class II. Division 1 malocclusion;Jacobson;Am J Orthod,1967
5. A cephalometric appraisal of cases of Angle Class II, division 1 malocclusion treated by the Andre en appliance;Parkhouse;Br Soc Study of Orthod,1969