@inproceedings{maillat-2001-directional,
    title = "Directional {PP}s And Reference Frames In {DRT}",
    author = "Maillat, Didier",
    booktitle = "Proceedings of the {ACL} 2001 Workshop on Temporal and Spatial Information Processing",
    year = "2001",
    url = "https://preview.aclanthology.org/Add-Cong-Liu-Florida-Atlantic-University-author-id/W01-1304/"
}