Citation

McKenna-Lawlor, S.M.P.; Kirsch, E.; O'Sullivan, D.; Thompson, A.; Wenzel, K.-P.; Lemaire, J.; Tranquille, C.; Daly, E. (1991). Historic data taken aboard Giotto by the energetic particle detector EPONA on the first occasion when an interplanetary probe re-encountered the earth. , Proceedings of the 22nd International Cosmic-ray Conference (ICRC-22), 11-23 August 1991, Dublin, Ireland, 307-310,