1. Abadi M, Barham P, Chen J, Chen Z, Davis A, Dean J, Devin M, Ghemawat S, Irving G, Isard M, Kudlur M, Levenberg J, Monga R, Moore S, Murray DG, Steiner, B, Tucker P, Vasudevan V, Warden P, Wicke M, Yu Y, Zheng X (2016) Tensorflow: a system for large-scale machine learning. In: Proceedings of the 12th USENIX conference on operating systems design and implementation, OSDI16, Savannah, GA, pp 265–283
2. Bahdanau D, Cho K, Bengio Y (2015) Neural machine translation by jointly learning to align and translate. In: Bengio Y, LeCun Y (eds) 3rd international conference on learning representations, ICLR 2015, San Diego, CA, May 7–9, 2015, conference track proceedings, 15pp
3. Barone AVM, Haddow B, Germann U, Sennrich R (2017) Regularization techniques for fine-tuning in neural machine translation. In: Proceedings of the 2017 conference on empirical methods in natural language processing, Copenhagen, pp 1489–1494
4. Bojar O, Buck C, Federmann C, Haddow B, Koehn P, Leveling J, Monz C, Pecina P, Post M, Saint-Amand H, Soricut R, Specia L, Tamchyna A (2014) Findings of the 2014 workshop on statistical machine translation. In: Proceedings of the ninth workshop on statistical machine translation, Baltimore, MD, pp 12–58
5. Burlot F, Yvon F (2018) Using monolingual data in neural machine translation: a systematic study. In: Proceedings of the third conference on machine translation: research papers, pp 144–155, Brussels, Belgium