1. A miniature Wright peak flow meter;Wright, B.M.;BrMedJ,1978
2. Maximal forced expiratory flow rate as a measure of ventilatory capacity with a description of a new portable instrument for measuring it;Wright, B.M.; McKerrow, C.B.,1959
3. Peak expiratory flow in normal subjects;Gregg, I.; Nunn, A.J.;Br Med J,1973
4. Peak expiratory flow in symptomless elderly smokers and ex-smokers;Gregg, I.; Nunn, A.J.,1989
5. Expiratory peak flow;Pelzer, A.M.; Thomson, M.L.;Br MedJ,1964