@misc{indiciaee92b1c60265c,
  title = {Causality and double-negative metamaterials.},
  author = {Richard W Ziolkowski and Allison D Kipple},
  year = {2003},
  doi = {10.1103/physreve.68.026615},
  url = {https://pubmed.ncbi.nlm.nih.gov/14525141/},
  note = {Source identifier: 14525141}
}