TY - JOUR AU - Ellen Zweibel BT - The Astrophysical Journal DA - Aug-04-2004 DO - 10.1086/368256 PY - 2003 SP - 625 EP - 637 T2 - The Astrophysical Journal TI - Cosmic-Ray History and Its Implications for Galactic Magnetic Fields VL - 587 SN - 0004-637X ER -