@misc{indiciaefdd88eb35ea3,
  title = {Nonlinear electromagnetic X waves.},
  author = {C Conti and S Trillo and P Di Trapani and G Valiulis and A Piskarskas and O Jedrkiewicz and J Trull},
  year = {2003},
  doi = {10.1103/physrevlett.90.170406},
  url = {https://pubmed.ncbi.nlm.nih.gov/12786060/},
  note = {Source identifier: 12786060}
}