@misc{indiciaea06f61bc7a7f,
  title = {Observation of seeded second harmonic generation in bulk germanosilicate fiber preforms},
  author = {Lawandy, N. M. and Selker, M. D.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19910037816},
  note = {Source identifier: 19910037816}
}