@misc{dai2019transformer,
  title={Transformer-XL: Attentive Language Models Beyond a Fixed-Length Context},
  author={Zihang Dai and Zhilin Yang and Yiming Yang and William W. Cohen and Jaime Carbonell and Quoc V. Le and Ruslan Salakhutdinov},
  year={2019},
  eprint={1901.02860},
  archivePrefix={arXiv},
  primaryClass={cs.LG},
  url={https://arxiv.org/abs/1901.02860}
}