?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Samia%2C+Mireille&rft.aulast=Samia&rft.aufirst=Mireille&rft.date=July+2009&rft.title=Pie+Tree+Visualization&rft.btitle=Proceedings+SEKE+2009&rft.genre=bookitem