@article{returnntherwthextensibletraining,
  title = {RETURNN: The RWTH Extensible Training framework for Universal Recurrent Neural Networks},
  author = {Patrick Doetsch and Albert Zeyer and Paul Voigtlaender and Ilya Kulikov and Ralf Schlüter and Hermann Ney},
  year = {2016},
  eprint = {1608.00895},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1608.00895v2},
}