Context-Freeness of the Language Accepted by Marcus’ Parser R Nozohoor-Farshi author 1987-07 text 25th Annual Meeting of the Association for Computational Linguistics Association for Computational Linguistics Stanford, California, USA conference publication nozohoor-farshi-1987-context 10.3115/981175.981192 https://aclanthology.org/P87-1017/ 1987-07 117 122