1. Lower threshold and greater bronchomotor responsiveness of asthmatic subjects to sulfur dioxide;Sheppard;Amer. Rev. Respir. Dis.,1980
2. Exercise increases sulfur dioxide-induced bronchoconstriction in asthmatic subjects;Sheppard;Amer. Rev. Respir. Dis.,1981
3. Respiratory responses of young adult asthmatics to sulfur dioxide exposure under simulated ambient conditions;Linn;Environ. Res.,1982
4. Respiratory effects of 0.75 ppm sulfur dioxide in exercising asthmatics: Influence of upper respiratory defenses;Linn;Environ. Res.,1983
5. Respiratory effects of sulfur dioxide in heavily exercising asthmatics: A dose-response study;Linn;Amer. Rev. Respir. Dis.,1983