Ondrej Bojar Rajen Chatterjee Christian Federmann Mark Fishel Yvette Graham Barry Haddow Matthias Huck Antonio Jimeno-Yepes Philipp Koehn André F. T. Martins Christof Monz Matteo Negri Aurélie Névéol Mariana L. Neves Matt Post Marco Turchi Karin Verspoor Proceedings of the Fourth Conference on Machine Translation, WMT 2019, Florence, Italy, August 1-2, 2019 - Volume 1: Research Papers WMT (1) Association for Computational Linguistics 2019 978-1-950737-27-7 https://aclanthology.org/volumes/W19-52/ https://aclanthology.org/W19-5200/ db/conf/wmt/wmt2019-1.html