@article{sondheimer-perry-1975-sps,
    title = "{SPS}: A Formalism for Semantic Interpretation and its Use in Processing Prepositions that Reference Space",
    author = "Sondheimer, Norman K.  and
      Perry, Doyt",
    editor = "Hays, David G.",
    journal = "American Journal of Computational Linguistics",
    month = nov,
    year = "1975",
    note = "Microfiche 34",
    url = "https://preview.aclanthology.org/moar-dois/J75-4027/",
    pages = "49--63"
}