1. Haddow, A., Kon, G. A. R., and Ross, W. C. J., Nature, 162, 824 (1948).
2. Goldacre, R. J., Loveless, A., and Ross, W. C. J., Nature, 163, 667 (1949).
3. Loveless, A., and Ross, W. C. J., Nature, 166, 1112 (1950).
4. Philips, F. S., J. Pharm. Exp. Ther., 99, 281 (1950).
5. Timmis, G. M., Brit. Pat. App. 20464 (1948); Acta Unio Internationalis contra Cancrum, vii, 3, 90 (1951).