@misc{indiciae8a9f4eeba155,
  title = {Ion flow at comet Halley},
  author = {Johnstone, A. and Coates, A. and Kellock, S. and Wilken, B. and Jockers, K.},
  year = {1986},
  url = {https://ntrs.nasa.gov/citations/19860056172},
  note = {Source identifier: 19860056172}
}