Authors: Jean-Pierre Bibring; Yves Langevin; François Poulet; Aline Gendrin; Brigitte Gondet; Michel Berthé; Alain Soufflot; Pierre Drossart; Michel Combes; Giancarlo Bellucci; Vassili Moroz; Nicolas Mangold; Bernard Schmitt Journal: Nature Date: 2004-03-17 Impact factor: 49.962