Falko, Vladimir I.Haug, R. J.König, P.McCann, E.Schmidt, T.2004-12-102004-12-1020012001http://hdl.handle.net/2003/1808110.17877/DE290R-11938enThe American Physical SocietyPhysical Review Letters53010.1103/PhysRevLett.86.276article (journal)