@misc{indiciaefc13bc838fcc,
  title = {Diffraction-limited spatial resolution of circumstellar shells at 10 microns},
  author = {Bloemhof, E. E. and Townes, C. H. and Vanderwyck, A. H. B.},
  year = {1983},
  url = {https://ntrs.nasa.gov/citations/19830027703},
  note = {Source identifier: 19830027703}
}