Some electronic properties of the organic superconductor β - (BEDT-TTF )2I3 J.R. Cooper, L. Forró, B. Korin-Hamzić, M. Miljak et D. Schweitzer J. Phys. France, 50 18 (1989) 2741-2749 DOI: 10.1051/jphys:0198900500180274100