@proceedings{DBLP:conf/alt/2009,
  editor    = {Ricard Gavald{\`a} and
               G{\'a}bor Lugosi and
               Thomas Zeugmann and
               Sandra Zilles},
  title     = {Algorithmic Learning Theory, 20th International Conference,
               ALT 2009, Porto, Portugal, October 3-5, 2009. Proceedings},
  booktitle = {ALT},
  publisher = {Springer},
  series    = {Lecture Notes in Computer Science},
  volume    = {5809},
  year      = {2009},
  isbn      = {978-3-642-04413-7},
  ee        = {http://dx.doi.org/10.1007/978-3-642-04414-4},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}