@inproceedings{santos-1992-tense,
    title = "A Tense and Aspect Calculus",
    author = "Santos, Diana",
    booktitle = "{COLING} 1992 Volume 4: The 14th {I}nternational {C}onference on {C}omputational {L}inguistics",
    year = "1992",
    url = "https://preview.aclanthology.org/fix-sig-urls/C92-4178/"
}