@inproceedings{abel/cikm/phd/2008,
  author    = {Fabian Abel},
  title     = {The benefit of additional semantics in folksonomy systems},
  booktitle = {PIKM},
  year      = {2008},
  pages     = {49-56},
  ee        = {http://doi.acm.org/10.1145/1458550.1458560},
  crossref  = {DBLP:conf/cikm/2008pikm},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/cikm/2008pikm,
  editor    = {Prasan Roy and
               Aparna S. Varde},
  title     = {Proceedings of the Second Ph.D. Workshop in CIKM, PIKM 2008,
               Napa Valley, California, USA, October 30, 2008},
  booktitle = {PIKM},
  publisher = {ACM},
  year      = {2008},
  isbn      = {978-1-60558-257-3},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}