@article{aspectralnonlocalblockforneuralnetworks,
  title = {A Spectral Nonlocal Block for Neural Networks},
  author = {Lei Zhu and Qi She and Lidan Zhang and Ping Guo},
  year = {2019},
  eprint = {1911.01059},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1911.01059v4},
}