Charge disproportionation in the metallic state of α -(BEDT-TTF)2I3 S. Moroto, K.-I. Hiraki, Y. Takano, Y. Kubo, T. Takahashi, H.M. Yamamoto et T. Nakamura J. Phys. IV France, 114 (2004) 399-340 DOI: 10.1051/jp4:2004114096