1. A. K. Solomon, Thomas J. Gill, andG. Leonard Gold, J. gen. Physiology40, 327 (1956).
2. J. B. Kahn, Jr. andG. H. Acheson, J. Pharmacol. exper. Therap.115, 305 (1955).
3. J. B. Kahn, Jr., J. Pharmacol. exper. Therap.121, 234 (1957).
4. J. B. Kahn, Jr. andShelby B. Cohen, J. Pharmacol, exper. Therap.120, 9 (1957).
5. W. Wilbrandt, Schweiz. med. Wschr.89, 1 (1959).