References
- 1. Benner, Y. F., Burton, H. R., and Burdick, D.: 23rd Tobacco Chemists' Res. Con£., Philadelphia, Pennsylvania, 1.969. .
- 2. Grossman, Y. D., Ikeda, R. M., Deszyk, E. Y., and Bavley, A.: Nature 1.99 (1.963) 661..
- 3. Grossman, Y. D., lkeda, R. M., Deszyk, E. Y., and Bavley, A.: 1.7th Tobacco Chemi.sts' Res. Cop£., Montreal, Canada, 1.963.
- 4. Hoffmann, D., .and Rathkamp, G.: Beitr. Tabakforsch. 4 (1.968) 1.24.
- 5. Hoffmann; D., and Rathkamp, G.: Anal. Chem, 42 (1.970) 366.
- 6. Hoffmann, D., and R~thkamp, G.: Anal. Chem. 42 (1.970) 1.643· .
- 7. Hoffmann, D., and Rubin, J.: .Beitr. Tabakforsch. 3 (1.966) 409. . .. .
- 8. Hoffmann, D., and Wynder, E .. L.: Anal. Chem. 32 (1.960) 295·
- 9. Hoffmann, D., and Wynder, E. L.: Cancer 1.3 ( 1.960) 1.062.
- 10. Hoffmann, D., and Wynder, E .. L.: Cancer Re.s. 27 (1967) 1.72.
- 11. Hoffmann, D., and Wynder, E. L.: Natl. Cancer Inst. Monograph 286 (1.968) 1.51..
- 12. Johnstone, R. A. W., and Onan, P. M. Y.: Chem. Soc. (1.963) 2221..
- 13, Pillsbury, Y., Bright, C. C., O'Connor, H. Y., and Irish, F. W.: J. Assoc. Offic. Agr. Chemists 52 (1.969) 458.
- 14. Seehofer, F., Miller, J. E., and Elmenhorst, H.: Beitr. Tabakforsdt. 3 (1.965) 75·
- 15. Wynder, E. L., and Hoffmann, D.: Tobacco and Tobacco Smoke, Studies in Experimental CarcinO:genesis, Academic Press, New York, 1.967