@article{JMLR:v10:delcoz09a,
  author  = {Juan Jos{{\'e}} del Coz and Jorge D{{\'i}}ez and Antonio Bahamonde},
  title   = {Learning Nondeterministic Classifiers},
  journal = {Journal of Machine Learning Research},
  year    = {2009},
  volume  = {10},
  number  = {79},
  pages   = {2273--2293},
  url     = {http://jmlr.org/papers/v10/delcoz09a.html}
}