Lazzati D., B.C. Morsony, R. Perna, M.C. Begelman, M. Galassi, D.M. Palmer, and E. Fenimore, in Aip (AIP Conference Proceedings, Santa Fe (Nm), 2008).
Rossi E.M., R. Perna, F. Daigne, M. Galassi, D.M. Palmer, and E. Fenimore, in (AIP, Santa Fe (Nm), 2008).
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