?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Sutherland&rft.aufirst=M&rft.au=Sutherland%2C+M&rft.volume=98&rft.date=9+February+2007&rft.atitle=Bulk+evidence+for+single-gap+s-wave+superconductivity+in+the+intercalated+graphite+superconductor+C6Yb&rft.issue=6&rft.title=PHYS+REV+LETT&rft.issn=0031-9007&rft.genre=article