Authors: K Hurley; S E Boggs; D M Smith; R C Duncan; R Lin; A Zoglauer; S Krucker; G Hurford; H Hudson; C Wigger; W Hajdas; C Thompson; I Mitrofanov; A Sanin; W Boynton; C Fellows; A von Kienlin; G Lichti; A Rau; T Cline Journal: Nature Date: 2005-04-28 Impact factor: 49.962