@article{JMLR:v9:garriga08a,
  author  = {Gemma C. Garriga and Petra Kralj and Nada Lavrač},
  title   = {Closed Sets for Labeled Data},
  journal = {Journal of Machine Learning Research},
  year    = {2008},
  volume  = {9},
  number  = {19},
  pages   = {559--580},
  url     = {http://jmlr.org/papers/v9/garriga08a.html}
}