1. Components of Class II malocclusion in children 8-10 years of age;McNamara;Angle Orthod,1981
2. Directional forces;Merrifield;Am J Orthod,1970
3. Tweed-Merrifield sequential directional force treatment;Klontz;Semin Orthod,1996
4. Orthodontic diagnosis and treatment analysis--concepts and values: part II;Gebeck;Am J Orthod Dentofacial Orthop,1995
5. Orthodontic diagnosis and treatment analysis-concepts and values. Part I;Gebeck;Am J Orthod Dentofacial Orthop,1995