1. B. Jolles andR. G. Harrison, Nature205, 920 (1965).
2. B. Jolles andR. G. Harrison, Br. J. Radiol.39, 12 (1966).
3. I. A. Oyvin andV. I. Oyvin, Bull. exp. Biol. Med. U.S.S.R.5, 366 (1950).
4. M. L. Belenkyi,Elements of Quantitative Evaluation of Pharmacological Effects (Academy of Sciences of the Latvia SSR, Riga, USSR 1959).
5. L. Poltorak, W. Czerwinski, K. Kucharczyk andW. Wiechno, Wiad. lek.17, 1065 (1964).