@article{curvedholographicopticalelementsfroma,
  title = {Curved Holographic Optical Elements from a Geometric View Point},
  author = {Tobias Graf},
  year = {2020},
  eprint = {2011.06414},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2011.06414v2},
}