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3. G.W. Neilson, Chem. Phys. Letts. 68, 247 (1979).
4. E.U. Franck, in 'Aqueous Ionic Solutions' eds. M.-C. Bellisant-Funel and G.W. Neilson, NATO ASI C205, 337, Reidel, Holland (1989).
5. H.-D. Ludermann and W.A.J. Mahan, High Temp. and High Press. 1, 215 (1969).