Vanadium valency and hybridization in V-doped hafnia investigated by electron energy loss spectroscopy A. Gloter, V. Serin, Ch. Turquat, C. Cesari, Ch. Leroux and G. Nihoul Eur. Phys. J. B, 22 2 (2001) 179-186 Published online: 15 July 2001 DOI: 10.1007/PL00011142