@misc{indiciae824ee883681d,
  title = {X waves generated at the second harmonic.},
  author = {Claudio Conti and Stefano Trillo},
  year = {2003},
  doi = {10.1364/ol.28.001251},
  url = {https://pubmed.ncbi.nlm.nih.gov/12885037/},
  note = {Source identifier: 12885037}
}