1. A. Erlenmeyer, Z. Gesamte Neurol. Psychiat. 103, 705 (1926).
2. W. R. Martin and C. G. Eades, J. Pharmacol. Exp. Ther. 133, 262–270 (1961).
3. E. L. Way, H. H. Loh, and F. H. Shen, J. Pharmacol. Exp. Ther. 167, 1–8 (1969).
4. L. Shuster, R. V. Hannam, and W. E. Boyle, Jr., J. Pharmacol. Exp. Ther. 140, 149–154 (1963).
5. B. M. Cox, M. Ginsburg, and O. H. Osman, Brit. J. Pharmacol. Chemother. 33, 245–256 (1968).