Rubio-Bollinger, G.Suderow, H.Vieira, S.2004-12-142004-12-1420012001http://hdl.handle.net/2003/1883110.17877/DE290R-12287enThe American Physical SocietyPhysical Review Letters530Tunneling Spectroscopy in Small Grains of Superconducting MgB210.1103/PhysRevLett.86.5582article (journal)