Extensions to the GrETEL Treebank Query Application Jan Odijk author Martijn van der Klis author Sheean Spoel author 2017 text Proceedings of the 16th International Workshop on Treebanks and Linguistic Theories Jan Hajič editor Prague, Czech Republic conference publication odijk-etal-2017-extensions https://aclanthology.org/W17-7608/ 2017 46 55