Restrictions on Monadic Context-Free Tree Grammars Akio Fujiyoshi author 2004-aug 23–aug 27 text COLING 2004: Proceedings of the 20th International Conference on Computational Linguistics COLING Geneva, Switzerland conference publication fujiyoshi-2004-restrictions https://aclanthology.org/C04-1012/ 2004-aug 23–aug 27 78 84