@inproceedings{morrill-valentin-2010-calculus,
    title = "On Calculus of Displacement",
    author = "Morrill, Glyn  and
      Valent{\'i}n, Oriol",
    editor = "Bangalore, Srinivas  and
      Frank, Robert  and
      Romero, Maribel",
    booktitle = "Proceedings of the 10th International Workshop on Tree Adjoining Grammar and Related Frameworks ({TAG}+10)",
    month = jun,
    year = "2010",
    address = "Yale University",
    publisher = "Linguistic Department, Yale University",
    url = "https://preview.aclanthology.org/ingest_wac_2008/W10-4406/",
    pages = "45--52"
}