@inproceedings{hssatreestructuresforbtgbased,
  title = {HSSA tree structures for BTG-based preordering in machine translation},
  author = {Yu-jia Zhang and Hao Wang and Yves Lepage},
  year = {2016},
  booktitle = {PACLIC 2016 10},
  url = {https://aclanthology.org/Y16-2010},
}