@inproceedings{fokkens-etal-2011-spring,
    title = "Spring Cleaning and Grammar Compression: Two Techniques for Detection of Redundancy in {HPSG} Grammars",
    author = "Fokkens, Antske  and
      Zhang, Yi  and
      Bender, Emily M.",
    editor = "Gao, Helena Hong  and
      Dong, Minghui",
    booktitle = "Proceedings of the 25th Pacific Asia Conference on Language, Information and Computation",
    month = dec,
    year = "2011",
    address = "Singapore",
    publisher = "Institute of Digital Enhancement of Cognitive Processing, Waseda University",
    url = "https://preview.aclanthology.org/fix-sig-urls/Y11-1025/",
    pages = "236--244"
}