@article{sparseandstructuredvisualattention1,
  title = {Sparse and Structured Visual Attention},
  author = {Pedro Henrique Martins and Vlad Niculae and Zita Marinho and André Martins},
  year = {2020},
  eprint = {2002.05556},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2002.05556v2},
}