@misc{indiciaee5b3e061b9d5,
  title = {Distributed coma sources and the CH4/CO ratio in Comet Halley},
  author = {Boice, D. C. and Huebner, W. F. and Sablik, M. J. and Konno, I.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19910026430},
  note = {Source identifier: 19910026430}
}