@misc{indiciae6ff866f0c457,
  title = {Second- and third-harmonic generations in compositionally graded films.},
  author = {Lei Gao},
  year = {2005},
  doi = {10.1103/physreve.71.067601},
  url = {https://pubmed.ncbi.nlm.nih.gov/16089922/},
  note = {Source identifier: 16089922}
}