@article{841971,
  author = {Darren Williams and Bradley Alpert},
  title = {Causality and Waveguide Circuit Theory},
  year = {2001},
  number = {49},
  month = {2001-04-01 00:04:00},
  publisher = {IEEE Transactions on Microwave Theory and Techniques},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=150829},
  doi = {https://doi.org/10.1109/22.915434},
  language = {en},
}