Berenblum, I. (1944). Initiation and carcinogenesis . Arch. Path. Lab. Med., 38, 233.
2.
Bock, F.G. and Moore, G.E. (1959). Carcinogenic activity of cigarette smoke condensate and remote X irradiation. J. Nat. Cancer. Inst., 22, 401.
3.
Bock, F.G., Moore, G.E. and Crouch, S.K. (1964). Tumour promoting activity of extracts of unburned tobacco. Science, 145, 831.
4.
Bock, F.G., Shamberger, R.J. and Myers, H.K. (1965). Tumour promoting agents in unburned cigarette tobacco. Nature, 208, 584.
5.
Boutwell, R.K. and Bosch, D.K. (1959). Tumour promoting action of phenol and related compounds for mouse skin. Cancer Res , 19, 413.
6.
Braven, J., Bonker, G.J., Fenner, M.L. and Tonge, B.L. (1967) Mechanism of carcinogenesis by tobacco smoke. Brit. J. of Cancer, 21, 623.
7.
Bryce, D.J. and Greenwood, C.T. (1963). Pyrolysis of plant sugars. Stacke , 15, 359.
8.
Clemo, G.R. and Miller, E.W. (1960). Tumour promotion by the neutral fraction of cigarette smoke. Brit. J. of Cancer,14, 651.
9.
Cowdry, E.V. , Croninger, A., Solaric , S. and Sunteff, V. (1961). Combined effect of cigarette tar and β radiation on mice. Cancer, 14, 344.
10.
Dipaolo, J.A. and Sheehe, R.R. (1962). The combined carcinogenic effect of cigarette tar and urethane. Cancer Res., 22, 1058.
11.
Dipaolo, J.A. and Levin, M.L. (1965). Tumour incidence in mice, after oral painting with cigarette tar. J. Nat. Cancer Fes., 34, 594.
12.
Doll, R. (1955). Ad. Cancer Res., vol. 3.
13.
Fenner, M.L. and Braven, J. (1968). Mechanism of carcinogenesis by tobacco smoke. Brit. J. of Cancer, 22, 477.
14.
Gellhorn, A. (1958). Carcinogenic activity of cigarette tobacco tar. Cancer Res., 18, 510.
15.
Holsti, P. (1958). Promoting effect of esters. Die Naturwissenschaffen, 45, 394.
16.
Horton, A.W. , Denman, D.T. and Trosset, R.P. (1957). Accelarating properties of aliphatic and related compounds. Cancer Res., 17, 758.
17.
Kreshover, S.J. and Salley, J.J. (1958). The role of nutritional deficiency in carcinogenesis. J. Dent. Med. , 3, 130.
18.
Lange, R. (1961). The effect of tobacco tar on -SH containing enzymes . Science, New York, 134, 52.
19.
Leading article. (1962). Cigarette as a co-carcinogen. Lancet, 1, 85.
20.
Leuchtenberger, C., Leuchtenberger , R., Ruch, F. and Tanaka, K. & T. (1963 ). Cytological and cytochemical alterations in the respiratory tract of mice after exposure to cigarette smoke; influenza virus, and both . Cancer Res., 23, 555.
21.
Mottram, J.C. (1938). Production of epithelial tumours by a combination of b radiation and painting with Benzpyrene. Am. J. Cancer, 32, 76.
22.
Reddy, D.G. & D. B. and Rao , P.R. (1960). Experimental production of cancer with tobacco tar and heat. Cancer, 13, 263.
23.
Riley, J.F. and Pettigrew, F.W. (1945). Acceleration by means of prolonged mechanical irritation of carcinogenesis of the skin of mice painted with I:2:5:6-Dibenzanthracene. Brit. J. Exp. Path, 26, 63.
24.
Roe, F.J.C. , Salaman, M.H. and Cohen, J. (1959). Incomplete carcinogens in cigarette smoke condensate; tumour promotion by phenolic fraction. Brit. J. of Cancer, 13, 623.
25.
Roe, F.J.C. (1962). Role of 3,4 Benzpyrene in carcinogenesis by cigarette smoke condensate. Nature. 194, 1089.
26.
Rous, P. and Kidd, J.G. (1939). Comparison of virus induced rabbit tumours with those of unknown cause initiated by tar. J. Exp. Med., 69, 399.
27.
Rous, P. and Friedwald, W.F. (1944). Initiating and promoting elements in tumour production . J. Exp. Med., 80, 101.
28.
Rous, P., and Friedenwald, W.F. (1944). Conversion of Shope papillomata to carcinomata by tar. J. Exp. Med.80, 127.
29.
Shubik, P., Goldfarb, A.R. and Ritchie, A.C. (1953). Latent carcinogenic action of b radiation on mouse epidermis. Nature, Lond., 171, 934.
30.
Shubik, P. and Hartwell, J.L. (1957). Tumour promoting agents in unburned cigarette tobacco. U.S. Public Health Service Pub., 149, Sup. 1.
31.
Tonge, B.L. (1962). The effect of tobacco smoke on the aerial oxidation of cysteine. Nature, Lond., 194, 284.
32.
Wynder, E.L. and Hoffmann, D. Ad.Cancer Res., vol. 8.
33.
Wynder, E.L. and Hoffmann, D. (1959). A study of tobacco carcinogenesis VII. Role of higher polynuclear aromatic hydrocarbons . Cancer , 12. 1079.
34.
Wynder, E.L. and Hoffmann, D. (1961). A study of tobacco carcinogenesis: VIII Role of acid fraction as a promoter. Cancer, 14, 1306.
35.
Wynder, E.L. and Hoffmann, D. (1963). Carcinogens in cigarette tobacco. Dent. Med. Wochsehr, 88, 623.