Reference:

Sami Virpioja and Stig-Arne Grönroos. LeBLEU: N-gram-based translation evaluation score for morphologically complex languages. In Proceedings of the Tenth Workshop on Statistical Machine Translation, pages 411–416, Lisbon, Portugal, September 2015. Association for Computational Linguistics.

Suggested BibTeX entry:

@inproceedings{virpioja2015wmt,
    address = {Lisbon, Portugal},
    author = {Virpioja, Sami and Gr\"{o}nroos, Stig-Arne},
    booktitle = {Proceedings of the Tenth Workshop on Statistical Machine Translation},
    month = {September},
    pages = {411--416},
    publisher = {Association for Computational Linguistics},
    title = {{LeBLEU}: N-gram-based Translation Evaluation Score for Morphologically Complex Languages},
    year = {2015},
}