@inproceedings{ruder2019unsupervised,
  title={Unsupervised Cross-Lingual Representation Learning},
  author={Ruder, Sebastian and S{\o}gaard, Anders and Vuli{\'c}, Ivan}, 
  booktitle={Proceedings of ACL 2019, Tutorial Abstracts},
  pages={31--38},
  year={2019}
}