1. Inhaling habits among smokers of different types of cigarette;NJ, I.Wald; M, Idle; J, Boreham
2. Carbon monoxide in breath in relation to smoking and carboxyhaemoglobin levels;Wald, N.J.; Idle, M.; Boreham, J.
3. The absorption of carbon monoxide from the conducting airways of the human lung;Cumming, G.; Guyatt, A.R.; Holmes, M.A.,1978
4. The in vitro formation of CO in blood;Sjostrand, T.;Acta Physiol Scand,1951
5. Self-titration by cigarette smokers;Ashton, H.; Stepney, R.; Thompson, J.W.,1979