@Article{landia2013deeper,
  author = {Landia, Nikolas and Doerfel, Stephan and Jäschke, Robert and Anand, Sarabjot Singh and Hotho, Andreas and Griffiths, Nathan},
  title  = {Deeper Into the Folksonomy Graph: FolkRank Adaptations and Extensions for Improved Tag Recommendations},
  journal = {cs.IR},
  year   = {2013},
  number = {},
  url    = {http://arxiv.org/abs/1310.1498},

  const  = {\ text}
}
@Inproceedings{doerfel2013analysis,
  author = {Doerfel, Stephan and Jäschke, Robert},
  title  = {An analysis of tag-recommender evaluation procedures},

  year   = {2013},
  number = {},
  url    = {https://www.kde.cs.uni-kassel.de/pub/pdf/doerfel2013analysis.pdf},
  doi = {10.1145/2507157.2507222},
  const  = {\ text}
}