@inproceedings{efficienttopdownbtgparsingformachine,
  title = {Efficient Top-Down BTG Parsing for Machine Translation Preordering},
  author = {Tetsuji Nakagawa},
  year = {2015},
  booktitle = {IJCNLP 2015 7},
  url = {https://aclanthology.org/P15-1021},
}