@misc{indiciae0ef7d7cbed93,
  title = {CO observations of galactic reflection nebulae},
  author = {Knapp, G. R. and Kuiper, T. B. H. and Knapp, S. L. and Brown, R. L.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19770049803},
  note = {Source identifier: 19770049803}
}