Calzolari, A.Daghero, D.Gonnelli, R. S.Stepanov, V. A.Ummarino, G. A.2004-12-032004-12-0320012001http://hdl.handle.net/2003/92410.17877/DE290R-3811enThe American Physical SocietyPhysical Review Letters530Josephson Effect in MgB2 Break Junctions10.1103/PhysRevLett.87.097001article (journal)