@article{liu2024vision,
  title={Vision Transformers with Hierarchical Attention},
  author={Liu, Yun and Wu, Yu-Huan and Sun, Guolei and Zhang, Le and Chhatkuli, Ajad and Van Gool, Luc},
  journal={Machine Intelligence Research},
  volume={21},
  pages={670--683},
  year={2024},
  publisher={Springer}
}
@article{liu2021transformer,
  title={Transformer in Convolutional Neural Networks},
  author={Liu, Yun and Sun, Guolei and Qiu, Yu and Zhang, Le and Chhatkuli, Ajad and Van Gool, Luc},
  journal={arXiv preprint arXiv:2106.03180},
  year={2021}
}