1. Zubrod, O. G.: Conference on acute leukaemia and Burkitt’s tumour. American Cancer Society, National Cancer Institute, May 1967.
2. Stock, J. A.: In: Experimental chemotherapy, Vol. 4. (Ed. R. J. Schnitzer and F. Hawking.) New York: Academic Press 1966.
3. Brockman, R. W., C. Sparks, M. S. Simpson, and H. E. Skipper: Biochem. Pharmacol. 2, 77 (1959).
4. Paterson, A. R. P., and A. Hori: Can. J. Biochem. Physiol. 40, 181 (1962).
5. Sartorelli, A. C, G. A. le Page, and E. C. Moore: Cancer Res. 18, 1232 (1958).