Radial velocity variations in the young eruptive star EX Lupi Á. Kóspál, M. Mohler-Fischer, A. Sicilia-Aguilar, P. Ábrahám, M. Curé, Th. Henning, Cs. Kiss, R. Launhardt, A. Moór and A. Müller A&A, 561 (2014) A61 Published online: 23 December 2013 DOI: 10.1051/0004-6361/201322428