1. Andersson, L., Edsmyr, F., Jonsson, G. and Konyves, I. Recent Results in Cancer Research, 60, 73–77 (1977).
2. Bergel, F. and Wade, R. J. Chem. Soc. 941–947 (1959).
3. Forsgren, B. and Högberg, B. Acta Pharmaceutica Suecica, 15, 23–32 (1978).
4. Forsgren, B., Björk, P., Carlström, K., Gustafsson, J.Å., Pousette, Å. and Hogberg, B. Proc. Nat. Acad. Sei. In Press.
5. Jönsson, G., Högberg, B. and Nilsson, T. Scand. J. Urol. Nephrol. 11, 231–238 (1977).