@misc{indiciaeaed9c2c5829b,
  title = {Bismuth Oxide Nanoparticles in the Stratosphere},
  author = {Rietmeijer, Frans J. M. and Mackinnon, Ian D. R.},
  year = {1997},
  url = {https://ntrs.nasa.gov/citations/19990010757},
  note = {Source identifier: 19990010757}
}