1. and J. Chem. Soc., Chem. Commun., 1578 (1984).
2. and in NMR and the Periodic Table, edited by and Academic Press, London (1978), pp. 195-278.
3. Annu. Rep. NMR Spectrosc. edited by Academic Press, New York, 9, 125 (1979).
4. Annu. Rep. NMR Spectrosc. edited by Academic Press, New York, 10A, 1 (1980).
5. NATO ASI Seri;Kidd,1983