1. Berenblum, I., Shubik, P.: A new, quantitative, approach to the study of the stages of chemical carcinogenesis in the mouse's skin. Br. J. Cancer1, 379?391 (1947)
2. Berenblum, I., Shubik, P.: An experimental study of the initiating stage of carcinogenesis, and a re-examination of the somatic cell mutation theory of cancer. Br. J. Cancer3, 109?118 (1949)
3. Claisse, P. J., Lantos, P. L., Roscoe, P. J.: Analysis of N-ethyl-N-nitrosourea-induced brain carcinogenesis by sequential culturing during the latent period. II. Morphology of the tumors induced by cell cultures. J. Natl. Cancer Inst.61, 391?398 (1978)
4. Copeland, D. D., Bigner, D. D.: The role of the subependymal plate in avian sarcoma virus tumor induction: comparison of incipient tumor in neonatal and adult rats. Acta Neuropathol. (Berl.)38, 1?6 (1977)
5. Copeland, D. D., Talley, F. A., Bigner, D. D.: The fine structure of intracranial neoplasms induced by the inoculation of avian sarcoma virus in neonatal and adult rats. Am. J. Pathol.83, 149?176 (1976)