@inproceedings{mani-etal-2001-guidelines,
    title = "Guidelines for Annotating Temporal Information",
    author = "Mani, Inderjeet  and
      Wilson, George  and
      Ferro, Lisa  and
      Sundheim, Beth",
    booktitle = "Proceedings of the First International Conference on Human Language Technology Research",
    year = "2001",
    url = "https://preview.aclanthology.org/fix-sig-urls/H01-1031/"
}