1. E.W. Ong, M.J. McKelvy, G. Ouvrard and W.S. Glaunsinger, Chem. Mater. 4 (1992) 114.
2. P. Moreau and G. Ouvrard, in:Chemical Physics of Intercalation II, NATO ASI Series, ed. J.E. Fisher, in press.
3. T. Butz, S. Saibene, Th. Fraenzke and M. Weber, Nucl. Instr. Meth. A 284 (1989) 417.
4. G. Ouvrard, E.W. Ong, M.J. McKelvy and W.S. Glaunsinger,Proc. 10th Int. Conf. on Solid Compounds of Transition Elements, Münster (1992).