@inproceedings{extensionstothegreteltreebankquery,
  title = {Extensions to the GrETEL Treebank Query Application},
  author = {Jan Odijk and Martijn van der Klis and Sheean Spoel},
  year = {2017},
  booktitle = {WS 2017 1},
  url = {https://aclanthology.org/W17-7608},
}