@misc{indiciaea7115dac4f4e,
  title = {The HNC/HCN ratio in comets},
  author = {Irvine, W. M. and Dickens, J. E. and Lovell, A. J. and Schloerb, F. P. and Senay, M. and Bergin, E. A. and Jewitt, D. and Matthews, H. E. and Ferris, J. P.},
  year = {1997},
  url = {https://ntrs.nasa.gov/citations/20040088879},
  note = {Source identifier: 20040088879}
}