@inproceedings{viethen-etal-2013-graphs,
    title = "Graphs and Spatial Relations in the Generation of Referring Expressions",
    author = "Viethen, Jette  and
      Mitchell, Margaret  and
      Krahmer, Emiel",
    editor = "Gatt, Albert  and
      Saggion, Horacio",
    booktitle = "Proceedings of the 14th {E}uropean Workshop on Natural Language Generation",
    month = aug,
    year = "2013",
    address = "Sofia, Bulgaria",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/W13-2108/",
    pages = "72--81"
}