1. The respiratory tract;Stocker,2001
2. Electron microscopy of the rat lung;Low;Anat Rec,1952
3. Evidence of free fluid in the pulmonary alveoli;Terry;Anat Rec,1926
4. Neue Retraktionskraft uber einen Grundbegriff der Attemechanik;von Neergaard;Z Ges Exp Med,1929
5. Surface phenomena in relation to pulmonary function;Clements;Physiologist,1962