@article{nyquistsamplinganddegreesoffreedomof,
  title = {Nyquist-Sampling and Degrees of Freedom of Electromagnetic Fields},
  author = {Andrea Pizzo and Andrea de Jesus Torres and Luca Sanguinetti and Thomas L. Marzetta},
  year = {2021},
  eprint = {2109.10040},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2109.10040v2},
}