Are Very Large Context-Free Grammars Tractable? Pierre Boullier author Benoît Sagot author 2007-06 text Proceedings of the Tenth International Conference on Parsing Technologies Harry Bunt editor Paola Merlo editor Association for Computational Linguistics Prague, Czech Republic conference publication boullier-sagot-2007-large https://aclanthology.org/W07-2213/ 2007-06 94 105