Retraction Note: Hydrogenated nanocrystalline silicon germanium thin films Yusoff, A. R. M. ; Syahrul, M. N. ; Henkel, K. Abstract Publication: Pramana Pub Date: December 2013 DOI: 10.1007/s12043-013-0515-6 Bibcode: 2013Prama..81.1071Y