Observations of the helium focusing cone with pickup ions
G. Gloeckler, E. Möbius, J. Geiss, M. Bzowski, S. Chalov, H. Fahr, D. R. McMullin, H. Noda, M. Oka, D. Ruciński, R. Skoug, T. Terasawa, R. von Steiger, A. Yamazaki and T. Zurbuchen
A&A, 426 3 (2004) 845-854
DOI: https://doi.org/10.1051/0004-6361:20035768
