@inproceedings{watanabe-sumita-2002-bidirectional,
    title = "Bidirectional Decoding for Statistical Machine Translation",
    author = "Watanabe, Taro  and
      Sumita, Eiichiro",
    booktitle = "{COLING} 2002: The 19th International Conference on Computational Linguistics",
    year = "2002",
    url = "https://preview.aclanthology.org/ingest_wac_2008/C02-1050/"
}