1. Dentofacial morphology and breathing: a century of controversy;Warren,1991
2. Primate experiments on oral sensation and dental malocclusion;Harvold;Am J Orthod,1973
3. The long-face syndrome: vertical maxillary excess;Schendel;Am J Orthod,1974
4. Discussion on the mouthbreather;Ballard;Proc R Soc Med,1958
5. An improved technique for the simultaneous measurement of nasal and oral respiration;Keall;Am J Orthod,1986