@misc{indiciaeb9246e582648,
  title = {Two-photon vibrational spectroscopy for biosciences based on surface-enhanced hyper-Raman scattering.},
  author = {Janina Kneipp and Harald Kneipp and Katrin Kneipp},
  year = {2006},
  doi = {10.1073/pnas.0608262103},
  url = {https://pubmed.ncbi.nlm.nih.gov/17088534/},
  note = {Source identifier: 17088534}
}