@inproceedings{engelien-1967-programming,
    title = "Programming of Reversible Systems in Computational Linguistics",
    author = "Engelien, Gerhard",
    booktitle = "{COLING} 1967 Volume 1: Conference Internationale Sur Le Traitement Automatique Des Langues",
    year = "1967",
    url = "https://preview.aclanthology.org/fix-sig-urls/C67-1003/"
}