?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Ahmad&rft.au=Ahmad%2C+I&rft.aufirst=I&rft.date=15+December+2008&rft.atitle=Silicon+nanocluster-sensitized+emission+from+erbium%3A+The+role+of+stress+in+the+formation+of+silicon+nanoclusters&rft.volume=104&rft.issn=0021-8979&rft.title=Journal+of+Applied+Physics&rft.issue=12&rft.genre=article