Kinematics and helicity evolution of a loop-like eruptive prominence K. Koleva, M. S. Madjarska, P. Duchlev, C. J. Schrijver, J.-C. Vial, E. Buchlin and M. Dechev A&A, 540 (2012) A127 Published online: 11 April 2012 DOI: 10.1051/0004-6361/201118588