1. Über die Verengung der Nasenhöhle bedingt durch Gaumenenge and Anomale Zahnstellung;Eysell,1886
2. The application of orthodontic principles to nasal disease;Brown;Iowa State Dent See Trans,1902
3. History repeats itself-Part 1;Pollock;Am J Orthod,1968
4. Midpalatal suture expansion studies by the implant method over a seven-year period;Krebs;Eur Orthod Soc Rep Congr,1964
5. Nasal resistance to breathing and palatal height before and after expansion of the median palatine suture;Linder-Aronson;Odontol Revy,1963