@inproceedings{fromkin-rice-1969-interactive,
    title = "An Interactive Phonological Rule Testing System",
    author = "Fromkin, Victoria A.  and
      Rice, D. Lloyd",
    booktitle = "{I}nternational {C}onference on {C}omputational {L}inguistics {COLING} 1969: Preprint No. 53",
    month = sep,
    year = "1969",
    address = {S{\r{a}}nga S{\"a}by, Sweden},
    url = "https://preview.aclanthology.org/fix-sig-urls/C69-5301/"
}