?url_ver=Z39.88-2004&rft_id=10.1371%2Fjournal.pone.0126699&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Zhu%2C+Zhen&rft.aufirst=Zhen&rft.aulast=Zhu&rft.volume=10&rft.issue=5&rft.pages=1-17&rft.atitle=Global+Value+Trees&rft.title=PloS+One&rft.date=May+2015&rft.issn=1932-6203&rft.genre=article