4Chenan T,ElHefnawy AM,Simonetti OP,et al.Rate of elitnisation of exceas CO2 in humans,Respir Physiol,1988,73:379.
5Kowalehuk JM,Heigenhuser GJF,Lindinger ML,et al.Factorsiafluencing bydrogen ion concentration in mualcs after intense exercise,J Appl Pyhaiol,1988,65:2080.
6Brown SE,Nagendran RC,McHugh JW,et al.Effectn of a large carbo-hydrata load on walking performance in chmoic air-flow obstrution.AM Rev Respir Dis,1985,132:960.