1. Surgical-Orthodontic expansion of the maxilla;Bell;American Journal of Orthodontics,1976
2. The surgery of oral and facial diseases and malformations;Brown,1938
3. Untersuchungen iiber die obliteration der schnadelnahte and synchondrosen;Davida;Zeitschrift fur Anatomie and Entwicklungsgeshite,1926
4. Anatomical changes induced by splitting of the midpalatal suture;Davis;Angle Orthodontist,1969
5. Results of 310 cases of rapid maxillary expansion selected for medical reasons;Gray;Journal of Laryngology and Otology,1975