@inproceedings{cettolo-etal-2011-methods,
    title = "Methods for Smoothing the Optimizer Instability in {SMT}",
    author = "Cettolo, Mauro  and
      Bertoldi, Nicola  and
      Federico, Marcello",
    booktitle = "Proceedings of Machine Translation Summit XIII: Papers",
    month = sep # " 19-23",
    year = "2011",
    address = "Xiamen, China",
    url = "https://aclanthology.org/2011.mtsummit-papers.1",
}