References
- Glonninger, G. L. and Green, H. D. Am. J. Physiol (1955). 181: 258–262.
- Gregg, P. E. in The Physiological Basis of Medical Practice, C. H. Best and N. B. Taylor. Williams and Wilkins Co, Baltimore (1961). 252–273
- Kayaalp, S. O. Arzneim. Forsch (1966). 16: 1592–1594.