1. A. Cushny and van Naten, Arch. internat. de pharmacodyn. 1901, Bd. 9, S. 169.
2. I. D. Pilcher, Journal of Pharmacol. and exper. Therap. 1912, Bd. 3, S. 609.
3. C. Tigerstedt, Skandinav. Arch. f. Physiologie 1909, Bd. 22, S. 115.
4. I. H. Means and L. H. Newburgh, Journ. of Pharmacol. and exper. Therap. 1915, Bd. 7, S. 449.
5. G. N. Stewart, Journ. of Physiol. 1897, Bd. 22, S. 159.