@article{lookingforaneedleinahaystacka,
  title = {Looking for a Needle in a Haystack: A Comprehensive Study of Hallucinations in Neural Machine Translation},
  author = {Nuno M. Guerreiro and Elena Voita and André F. T. Martins},
  year = {2022},
  eprint = {2208.05309},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2208.05309v2},
}