1. Effect of oxygen on exercise ability in chronic respiratory insufficiency;Cotes;Lancet,1956
2. Exercise tolerance breathing a low density gas mixture, 35% oxygen and air in patients with chronic obstructive bronchitis;Raimondi;Clin Sci Mol Med,1970
3. Response to patient with chronic airway obstruction;Vyas;Am Rev Respir Dis,1971
4. Exercise tolerance in chronic airway obstruction;Jones;Am Rev Respir Dis,1971
5. Effect of exercise on arterial lactate, pyruvate and excess lactate in chronic bronchitis;Daly;Br J Dis Chest,1967