@proceedings{ws-2019-machine, title = "Proceedings of the Fourth Conference on Machine Translation (Volume 1: Research Papers)", editor = "Bojar, Ond{\v{r}}ej and Chatterjee, Rajen and Federmann, Christian and Fishel, Mark and Graham, Yvette and Haddow, Barry and Huck, Matthias and Yepes, Antonio Jimeno and Koehn, Philipp and Martins, Andr{\'e} and Monz, Christof and Negri, Matteo and N{\'e}v{\'e}ol, Aur{\'e}lie and Neves, Mariana and Post, Matt and Turchi, Marco and Verspoor, Karin", month = aug, year = "2019", address = "Florence, Italy", publisher = "Association for Computational Linguistics", url = "https://preview.aclanthology.org/fix-sig-urls/W19-5200/" }