1. Experimental researches on the causes and nature of hay fever;Blackley, C.H.,1959
2. Death from asthma;J, Morrison Smith;Lancet,1966
3. Investigation into the use of drugs preceding death from asthma;R, Speizer F.E.Doll; P, Heaf;Br Med J,1968
4. Asthma mortality. Why the United States was spared in an epidemic of deaths due to asthma;Stolley, P.D.;Am Rev Respir Dis,1972
5. Death from asthma;Anonymous;Lancet,1968