1. Bein, H. J.: Some pharmacological properties of guanethidine. In: Adrenergic mechanisms, p. 162. J. R. Vane, Ed. London: J. & A. Churchill, Ltd. 1960.
2. Brunner, H., P. R. Hedwall, and M. Meier: Influence of an adrenergic ?-receptor blocking agent on the effect of various hypotensive agents in the hypertensive rat. Experientia (Basel) 21, 231 (1965).
3. Burn, J. H.: Practical Pharmacology, p. 56. Oxford: Blackwell Scientific Publications 1952.
4. Cass, R., and T. B. L. Spriggs: Tissue amine levels and sympathetic blockade after guanethidine and bretylium. Brit. J. Pharmacol. 17, 442 (1961).
5. Day, M. D.: Effect of sympathomimetic amines on the blocking action of guanethidine, bretylium and xylocholine. Brit. J. Pharmacol. 18, 421 (1962).