References
- Esplin D. W. The Pharmacological Basis of Therapeutics Editors, L. S. Goodman, A. Gilman. The Macmillan Company, New York 1966; 237–246
- Jackman L. M., Sternhell S. Applications of Nuclear Magnetic Resonance Spectroscopy in Organic Chemistry. Pergamon Press, Oxford 1969; 224