The conductances, transference numbers and activity coefficients of aqueous sblutions at 25.0°C of lanthanum, praseodymium, neodymium, gadolinium and erbium bromides and of gadolinium chloride were determined for concentrations up to 0.1 normal. The accuracy for all determinations was within 0.1 per cent.
Yaffe, I. Sandford and Spedding, F. H., "Conductances, transference numbers and activity coefficients of some rare earth halides" (1952). Ames Laboratory ISC Technical Reports. 61.