1. W.F. Cooke, Brit. Med. J. 2, 147, 1024 (1924).
2. S.R. Gloyne, Lancet 1, 810 (1951).
3. P.C. Elwood and A.L. Cochrane, Brit. J. Ind. Med. 21, 304 (1964).
4. D.W. Kamp and S.A. Weitzman, P.S.E.B.M. 12, 214 (1997).
5. A.B. Kane. In: Mechanisms of Fibre Carcinogenesis, A.B. Kane, A.B. Kane, P. Boffetta, R. Saracci and J.D. Wilbourn (Eds.), International Agency for Research on Cancer, Lyon, 1996.