1. Expiratory peak flow rate;Leiner, G.C.; Abramowitz, S.; Small, M.J.; Stenby, V.B.; Lewis, W.A.;Am Rev Respir Dis,1963
2. Average normal values for the forced expiratory volume in white caucasian males;Cotes, J.E.; Rossiter, C.E.; Higgins, I.T.T.; Gilson, J.C.;BMJ,1966
3. Respiratory function tests in older people;Milne, J.S.; Williamson, J.;Clin Sci,1972
4. Spirometric standards for healthy elderly men and women;W, Schmidt C.Du; ML, Dickman; RM, Gardner; FK, Brough;Am Rev Respir Dis,1973
5. Variability in the maximal expiratory flow volume curve in asymptomatic smokers and non-smokers;Black, L.F.; Offord, K.; Hyatt, R.E.;Amn Rev Respir Dis,1974