Back, B. B.Betts, R. R.Chang, J.Chang, W. C.Chi, C. Y.Chu, Y. Y.Cumming, J. B.Dunlop, J. C.E917 CollaborationEldredge, W.Fung, S. Y.Ganz, R.Garcia, E.Gillitzer, A.Heintzelman, G.Henning, W. F.2004-12-132004-12-1320012001http://hdl.handle.net/2003/1853710.17877/DE290R-12590enThe American Physical SocietyPhysical Review Letters53010.1103/PhysRevLett.86.1970article (journal)