@misc{indiciae75f742222a11,
  title = {Second-harmonic generation from magnetic metamaterials.},
  author = {Matthias W Klein and Christian Enkrich and Martin Wegener and Stefan Linden},
  year = {2006},
  doi = {10.1126/science.1129198},
  url = {https://pubmed.ncbi.nlm.nih.gov/16873661/},
  note = {Source identifier: 16873661}
}