In Situ EXAFS Characterisation of the Synthesis of Polynuclear Chloroniobates from Sm Atom Reactions with Niobium Pentachloride C. Den Auwer, M. P. Andrews, V. Briois, C. Cartier dit Moulin et H. DexpertJ. Phys. IV France, 7 C2 (1997) C2-1051-C2-1056DOI: https://doi.org/10.1051/jp4:19972135