@article{deepleastsquaresmethodsanunsupervised,
  title = {Deep least-squares methods: an unsupervised learning-based numerical method for solving elliptic PDEs},
  author = {Zhiqiang Cai and Jingshuang Chen and Min Liu and Xinyu Liu},
  year = {2019},
  eprint = {1911.02109},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1911.02109v3},
}