Cardona, M.Karaiskaj, D.Pohl, H.-J.Ruf, T.Thewalt, M. L. W.2004-12-142004-12-1420012001http://hdl.handle.net/2003/1871510.17877/DE290R-525enThe American Physical SocietyPhysical Review Letters530Photoluminescence of Isotopically Purified Silicon: How Sharp are Bound Exciton Transitions?10.1103/PhysRevLett.86.6010article (journal)