1. Treatment of irregularities of the permanent or adult tooth;Angell;Dent Cosmos,1860
2. Rapid expansion of the maxillary dental arch and nasal cavity by opening the midpalatal suture;Haas;Angle Orthod,1961
3. The treatment of maxillary deficiency by opening the midpalatal suture;Haas;Angle Orthod,1965
4. Palatal expansion: just the beginning of dentofacial orthopedics;Haas;Am J Orthod,1970
5. Long-term posttreatment evaluation of rapid maxillary expansion;Haas;Angle Orthod,1980