1. ASTM. 1978. 1978 Annual Book of Standards, Part 15, Roads and Paving Materials; Bituminous Materials for Highway Construction, Waterproofing and Roofing. American Society for Testing and Materials: Philadelphia.
2. Bingham, E., H.L. Falk. 1969. Environmental carcinogens: the modifying effect of cocarcinogens on threshold response. Arch. Environ. Health 19:779–783.
3. Bingham, E., R.P. Trosset, and D. Warshawsky. 1979. Carcinogenic potential of petroleum hydrocarbons: a critical review of the literature. J. Environ. Pathol. Toxicol. 3:483–563.
4. Hammond, E.C., I.J. Selikoff, P.L. Lawther, and H. Seidman. 1976. Inhalation of benzpyrene and cancer in man. N.Y. Acad. Sci. 271:116–124.
5. Horton, A.W., D.T. Denman, and R.P. Trosset. 1957. Carcinogenesis of the skin: the accelerating properties of aliphatic and related hydrocarbons. Cancer Res. 17:758–66.