@inproceedings{theshapeofelementarytreesandscope,
  title = {The Shape of Elementary Trees and Scope Possibilities in STAG},
  author = {Robert Frank and Dennis Ryan Storoshenko},
  year = {2012},
  booktitle = {WS 2012 9},
  url = {https://aclanthology.org/W12-4627},
}