@Inproceedings{1316677,
  author = {Farooq, Umer and Kannampallil, Thomas G. and Song, Yang and Ganoe, Craig H. and Carroll, John M. and Giles, Lee},
  title  = {Evaluating tagging behavior in social bookmarking systems: metrics and design heuristics},

  year   = {2007},
  number = {},
  url    = {http://portal.acm.org/citation.cfm?id=1316677&coll=Portal&dl=GUIDE&CFID=9767993&CFTOKEN=86305662},
  doi = {http://doi.acm.org/10.1145/1316624.1316677},
  const  = {\ text}
}
@Article{1304546,
  author = {Farooq, Umer and Song, Yang and Carroll, John M. and Giles, C. Lee},
  title  = {Social Bookmarking for Scholarly Digital Libraries},
  journal = {IEEE Internet Computing},
  year   = {2007},
  number = {6},
  url    = {http://portal.acm.org/citation.cfm?id=1304546&coll=Portal&dl=GUIDE&CFID=46454031&CFTOKEN=27530397},
  doi = {http://dx.doi.org/10.1109/MIC.2007.135},
  const  = {\ text}
}