@inproceedings{lockemann-thompson-1969-rapidly,
    title = "A Rapidly Extensible Language System (The {REL} Language Processor)",
    author = "Lockemann, Peter C.  and
      Thompson, Frederick B.",
    booktitle = "{I}nternational {C}onference on {C}omputational {L}inguistics {COLING} 1969: Preprint No. 34",
    month = sep,
    year = "1969",
    address = {S{\r{a}}nga S{\"a}by, Sweden},
    url = "https://preview.aclanthology.org/fix-sig-urls/C69-3401/"
}