Chen, X. K.Franck, J. P.Irwin, M. J.Konstantinovic, M. J.Lawrie, D. D.2004-12-032004-12-0320012001http://hdl.handle.net/2003/128210.17877/DE290R-11083enThe American Physical SocietyPhysical Review Letters530Evidence for Two Superconducting Gaps in MgB210.1103/PhysRevLett.87.157002article (journal)