1. The flow volume loop: normal standards and abnormalities in chronic obstructive pulmonary disease;Bass, H.;Chest,1973
2. Effect of helium on maximal expiratory flow in patients with asthma before and during induced bronchoconstriction;Chan-Yeung, M.; Abboud, R.; Tsao, Ming Sound; Maclean, L.;American Review of Respiratory Disease,1976
3. Normal standards for ventilatory function using an automated wedge spirometer;Cherniack, R.M.; Raber, M.B.;A merican Review of Respiratory Disease,1972
4. Site of airway obstruction in asthma as determined by measuring maximal expiratory flow breathing air and a helium oxygen mixture;Despas, P.J.; Leroux, M.; Macklem, P.T.;Journal of Clinical Investigation,1972
5. Geigy Scientific Tables (1970)