?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Fabrizi&rft.aufirst=F&rft.au=Fabrizi%2C+F&rft.date=10+June+2011&rft.issue=23&rft.atitle=Circularly+Polarized+X+Rays+as+a+Probe+of+Noncollinear+Magnetic+Order+in+Multiferroic+TbMnO3+(vol+102%2C+237205%2C+2009)&rft.issn=0031-9007&rft.title=PHYS+REV+LETT&rft.volume=106&rft.genre=article