Solar origin of in-situ near-relativistic electron spikes observed with SEPT/STEREO A. Klassen, R. Gómez-Herrero, B. Heber, Y. Kartavykh, W. Dröge and K.-L. Klein A&A, 542 (2012) A28 Published online: 30 May 2012 DOI: 10.1051/0004-6361/201118626