Energetic-particle-flux decreases related to magnetic cloud passages as observed by the Helios 1 and 2 spacecraftJ. J. Blanco, M. A. Hidalgo, R. Gómez-Herrero, J. Rodríguez-Pacheco, B. Heber, R. F. Wimmer-Schweingruber and C. MartínA&A, 556 (2013) A146DOI: https://doi.org/10.1051/0004-6361/201321739
