The Treegram Index—An Efficient Technique for Retrieval in Linguistic Treebanks Hans Argenton author Anke Feldhaus author 1999-06 text Ninth Conference of the European Chapter of the Association for Computational Linguistics Henry S Thompson editor Alex Lascarides editor Association for Computational Linguistics Bergen, Norway conference publication argenton-feldhaus-1999-treegram https://aclanthology.org/E99-1041/ 1999-06 267 268