@misc{indiciae2cd0a2ad9003,
  title = {Study of optical properties and collective oscillations in new solid-state materials as a function of temperature using infrared and Raman techniques Semiannual report, 1 Aug. 1968 - 31 Jan. 1969},
  author = {Perry, C. H.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690018642},
  note = {Source identifier: 19690018642}
}