@misc{indiciae7589e1acc797,
  title = {Interstellar C2, CH, and CN in translucent molecular clouds},
  author = {Black, John H. and Van Dishoeck, Ewine F.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890050332},
  note = {Source identifier: 19890050332}
}