1. Chronic obstructive pulmonary disease. Bronchitis and emphysema. Harrison's Principles of Internal Medicine.;Knowles,1971
2. National Tuberculosis and Respiratory Disease Association: Chronic Obstructive Pulmonary Disease. A Handbook for Physicians. 1965, p 28
3. Effect of Isoproterenol on gas exchange during air and oxygen breathing in patients with chronic pulmonary disease.;Gazioglu;Am Rev Resp Dis,1971
4. Bronchodilators response patterns in patients with chronic airways obstruction: use of peak inspiratory flow rate.;Saunders;Br Med J,1967
5. The bronchospastic component in patients with chronic bronchitis and emphysema.;Curtis;JAMA,1966