@misc{indiciaed6e5b69112f6,
  title = {Spatial studies of planetary nebulae with IRAS},
  author = {Hawkins, G. W. and Zuckerman, B.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910055374},
  note = {Source identifier: 19910055374}
}