Li, Z., R. Wang, K. Chen, M. Utiyama, E. Sumita, Z. Zhang, and H. Zhao. “Explicit Sentence Compression for Neural Machine Translation”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 34, no. 05, Apr. 2020, pp. 8311-8, doi:10.1609/aaai.v34i05.6347.