Hot ions observed by the Giotto ion mass spectrometer at the comet P/Halley contact surfaceR. Goldstein, E. G. Shelley, B. E. Goldstein et al.|Unknown|1988Cited by 8
The composition and dynamics of cometary ions in the outer coma of HalleyH. Balsiger, U. Rettenmund, K. Altwegg et al.|MPG.PuRe (Max Planck Society)|1986Cited by 1