@misc{indiciae67053022d70f,
  title = {The ion mass spectrometer on Giotto},
  author = {Balsiger, H. and Altwegg, K. and Buehler, F. and Fischer, J. and Geiss, J. and Benson, J. and Hemmerich, P. and Goldstein, B. E. and Goldstein, R. and Neugebauer, M.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19870059367},
  note = {Source identifier: 19870059367}
}