@article{hidennpgdreducedorderhierarchicaldeep,
  title = {HiDeNN-PGD: reduced-order hierarchical deep learning neural networks},
  author = {Lei Zhang and Ye Lu and Shaoqiang Tang and Wing Kam Liu},
  year = {2021},
  eprint = {2105.06363},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2105.06363v1},
}