1. P.Schuster, G.Zundel and C.Sandorfy, Eds., The Hydrogen Bond. Recent Developments in Theory and Experiments, North-Holland, Amsterdam, 1976, Vol.1–3.
2. J.A.S.Smith, Ed., Advances in Nuclear Quadrupole Resonance, Heyden, London, 1974, Vol.1; 1975, Vol.2; 1978, Vol.3; 1980, Vol.4; 1983, Vol.5.
3. D.Biedenkapp and A.Weiss, Ber.Bunsenges.Phys.Chem. 70, 788 (1966).
4. H.Chihara and N.Nakamura, Bull.Chem.Soc.Jpn. 44, 1980 (1971).
5. H.Chihara and N.Nakamura, J.Phys.Soc.Jpn. 37, 156 (1974).