Reference
- Newman , J. B. Private communication
- Pagnotto , L. D. , Elkins , H. B. , Heinrich Brugsch , G. and Janet Walkley , E. 1961 . Industrial Benzene Exposure from Petroleum Naphtha: I Rubber Coating Industry. . Amer. Ind. Hyg. Assoc J. , 22 Dec : 417