1. Alveolar CO levels and changes in CO yield of cigarettes: A randomized control trial;Epstein,1980
2. The role of nicotine in the tobacco smoking habit;Armitage,1978
3. Self-titration by cigarette smokers;Ashton;British Medical Journal,1979
4. Puffing frequency and nicotine intake in cigarette smokers;Ashton;British Medical Journal,1970
5. The effects of a reduced draw resistance cigarette on human smoking parameters and alveolar carbon monoxide levels;Dunn,1978