@inproceedings{lipzcak2009tag,
  author = {Lipczak, Marek and Hu, Yeming and Kollet, Yael and Milios, Evangelos},
  booktitle = {ECML PKDD Discovery Challenge 2009 (DC09)},
  crossref = {eisterlehner2009ecmlpkdd},
  editor = {Eisterlehner, Folke and Hotho, Andreas and Jäschke, Robert},
  interhash = {042a9e208f55e00172e2100dc7f356d5},
  intrahash = {dc2bfb649e4b0ffe2da37e9e25e0404e},
  issn = {1613-0073},
  month = sep,
  pages = {157--172},
  series = {CEUR-WS.org},
  title = {Tag Sources for Recommendation in Collaborative Tagging Systems},
  url = {http://ceur-ws.org/Vol-497/paper_19.pdf},
  volume = 497,
  year = 2009
}