Comparison of the Two Major Solar Proton Events at ULYSSES During March 1991 and May-June 1991
Bibcode: 1993ICRC....3..246A
Armstrong, T. P.; Venkatesan, D.; Ananth, A. G.; Anglin, D.; Burrows, R.
United States, Canada, India
1993
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23rd International Cosmic Ray Conference (ICRC23), Volume 3
Ulysses
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