1. Jordan, Arch. f. exp. Pathol. u. Pharmakol. 1878, Bd. 8, S. 15.
2. Böhm, 1885, Bd. 19, S. 87.
3. R. Hunt und M. Taveau, Public Health and Marine-Hospital Service of the United States 1911, Bulletin 73.
4. H. H. Dale, Journ. of pharmacol. a. exp. therapeut. 1913, Bd. 6, S. 147.
5. Burn und Dale, 1914, Bd. 6, S. 447.