Phrase Structure Trees Bear More Fruit Than You Would Have Thought Aravind K Joshi author Leon S Levy author 1980-06 text 18th Annual Meeting of the Association for Computational Linguistics Association for Computational Linguistics Philadelphia, Pennsylvania, USA conference publication joshi-levy-1980-phrase 10.3115/981436.981451 https://aclanthology.org/P80-1012/ 1980-06 41 42