1. 1992. Faraday Symposium 27, The conformation of flexible molecules in fluid phases.J. chem. Soc. Faraday Trans., 88 For a recent overview see,
2. Lunazzi, L. 1976.Determination of Organic Structures by Physical Methods, Edited by: Nachod, F. C., Zuckermann, J. J. and Randall, E. W. Vol. 6, 335London: Academic Press.