1. Aixsworth, C.: Substituted β-aminoethylindazoles. J. Amer. chem. Soc. 80, 965–967 (1958).
2. Amix, A. H., T. B. B. Crawford and J. H. Gaddum: The distribution of substance P and 5-hydroxvtryptamine in the central nervous system of the dog. J. Physiol. (Lond.) 126, 596–618 (1954).
3. Barlow, R. B., and I. Kahn: Actions of some analogues of tryptamine on the isolated rat uterus and on the isolated rat fundus strip preparations. Brit. J. Pharmacol. 14, 99–107 (1959 a).
4. Barlow, R. B., and I. Kahn: Actions of some analogues of 5-hydroxytryptamine on the isolated rat uterus and the rat fundus strip preparations. Brit. J. Pharmacol. 14, 265–272 (1959 b).
5. Barlow, R. B., and I. Kahn: The use of the guinea-pig ileum preparation for testing the activity of substances which imitate or antagonize the actions of 5-hydroxytryptamine and tryptamine. Brit. J. Pharmacol. 14, 553–558 (1959 c).