1. G. C. Pimentel, A. D. McClellan: The Hydrogen Bond, Freeman, San Francisco, 1960
2. F. Franks: Water, a Comprehensive Treatise, Plenum, New York, 1972, V. 1–6
3. M. D. Joesten, L. J. Schaad: Hydrogen Bonding, Marcel Dekker, New York, 1974
4. Ref. 2, V. 4–6
5. H. R. Carlon, C. A. Harden: Appl. Optics 19, 1776 (1980)