1. Asthma: a modern perspective;Leffert;Pediatrics,1978
2. The physiological basis of pulmonary function testing;Altose,1979
3. Ventilation;Murray,1976
4. The chronicity of acute attacks of asthma-mechanical and therapeutic implications;McFadden;J Allergy Clin Immunol,1975
5. Evaluating commercially available spirometers;Gardner;Am Rev Resp Dis,1980