@inproceedings{daubigney-etal-2013-model,
    title = "Model-free {POMDP} optimisation of tutoring systems with echo-state networks",
    author = "Daubigney, Lucie  and
      Geist, Matthieu  and
      Pietquin, Olivier",
    editor = "Eskenazi, Maxine  and
      Strube, Michael  and
      Di Eugenio, Barbara  and
      Williams, Jason D.",
    booktitle = "Proceedings of the {SIGDIAL} 2013 Conference",
    month = aug,
    year = "2013",
    address = "Metz, France",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/W13-4014/",
    pages = "102--106"
}