1. Contribution from motor vehicle exhaust to the mutagenic activity of airborne particles;Alfheim,1982
2. Mutagenicity of airborne particulate matter in relation to traffic and meteorological conditions;Alfheim,1981
3. Bioassay of extracts of ambient particulate matter;Alfheim;Environ. Health Perspect.,1983
4. Mutagenic activity of airborne particulates at non-industrial locations;Alink;Mutation Res.,1983
5. Carcinogenicity of organic fractions of particulate pollutants collected in New York city and administered subcutaneously to infant mice;Asahina;Cancer Res.,1972