@misc{indiciae9bfca7146d72,
  title = {Difference frequency generation by optical mixing of two dye lasers in proustite.},
  author = {Decker, C. D. and Tittel, F. K.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19730053363},
  note = {Source identifier: 19730053363}
}