@misc{indiciae7359f502ec3e,
  title = {Duality relation for the Maxwell system.},
  author = {F Zolla and S Guenneau},
  year = {2003},
  doi = {10.1103/physreve.67.026610},
  url = {https://pubmed.ncbi.nlm.nih.gov/12636844/},
  note = {Source identifier: 12636844}
}