@misc{indiciaeac3d20d3fcfb,
  title = {Yb fiber laser pumped mid-IR source based on difference frequency generation and its application to ammonia detection},
  author = {Matsuoka, N. and Yamaguchi, S. and Nanri, K. and Fujioka, T. and Richter, D. and Tittel, F. K.},
  year = {2001},
  url = {https://ntrs.nasa.gov/citations/20040088686},
  note = {Source identifier: 20040088686}
}