@misc{indiciae15a6a1e4b4ca,
  title = {Light from reflection nebulae. IV - Scattering by silicate grains},
  author = {Hanner, M. S.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710041635},
  note = {Source identifier: 19710041635}
}