@inproceedings{op-den-akker-ter-doest-1994-weakly,
    title = "Weakly Restricted Stochastic Grammars",
    author = "op den Akker, Rieks  and
      ter Doest, Hugo",
    booktitle = "{COLING} 1994 Volume 2: The 15th {I}nternational {C}onference on {C}omputational {L}inguistics",
    year = "1994",
    url = "https://preview.aclanthology.org/jlcl-multiple-ingestion/C94-2150/"
}