@inproceedings{appelt-1987-bidirectional,
    title = "Bidirectional Grammars and the Design of Natural Language Generation Systems",
    author = "Appelt, Douglas E.",
    editor = "Wilks, Yorick",
    booktitle = "Theoretical Issues in Natural Language Processing 3",
    year = "1987",
    url = "https://preview.aclanthology.org/fix-sig-urls/T87-1042/"
}