1. Rhinomanometry;Kern;Otolaryngol Clin North Am,1973
2. Athembeschlag als Hülfsmittel zur Diagnose der nasalen Stenose;Zwaardemaker;Arch Laryngol,1891
3. Die exackte Messung der Luftdurchgängligkeit der Nase;Kayser;Arch Laryngol,1895
4. Nasal resistance, skeletal classification, and mouth breathing in orthodontic patients;Watson;Am J Orthod,1968
5. Mouth breathing and malocclusion: quantitative technique for measurement of oral and nasal airflow velocities;Rasmus;Angle Orthod,1969