NRC-CNRC Systems for Upper Sorbian-German and Lower Sorbian-German Machine Translation 2021 Rebecca Knowles author Samuel Larkin author 2021-11 text Proceedings of the Sixth Conference on Machine Translation Loic Barrault editor Ondrej Bojar editor Fethi Bougares editor Rajen Chatterjee editor Marta R Costa-jussa editor Christian Federmann editor Mark Fishel editor Alexander Fraser editor Markus Freitag editor Yvette Graham editor Roman Grundkiewicz editor Paco Guzman editor Barry Haddow editor Matthias Huck editor Antonio Jimeno Yepes editor Philipp Koehn editor Tom Kocmi editor Andre Martins editor Makoto Morishita editor Christof Monz editor Association for Computational Linguistics Online conference publication knowles-larkin-2021-nrc https://aclanthology.org/2021.wmt-1.107/ 2021-11 999 1008