@misc{indiciae99b96d001ff8,
  title = {Cooling and recombination processes in cometary plasma},
  author = {Wallis, M. K. and Ong, R. S. B.},
  year = {1976},
  url = {https://ntrs.nasa.gov/citations/19760013999},
  note = {Source identifier: 19760013999}
}