@misc{indiciaeeea0559355ba,
  title = {Negative index lens aberrations.},
  author = {D Schurig and D R Smith},
  year = {2004},
  doi = {10.1103/physreve.70.065601},
  url = {https://pubmed.ncbi.nlm.nih.gov/15697425/},
  note = {Source identifier: 15697425}
}