@article{hierarchicalspatialtransformernetwork,
  title = {Hierarchical Spatial Transformer Network},
  author = {Chang Shu and Xi Chen and Qiwei Xie and Hua Han},
  year = {2018},
  eprint = {1801.09467},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1801.09467v2},
}