Transient dust in warm debris disks (Corrigendum) - Detection of Fe-rich olivine grains J. Olofsson, A. Juhász, Th. Henning, H. Mutschke, A. Tamanai, A. Moór and P. Ábrahám A&A, 547 (2012) C1 Published online: 19 October 2012 DOI: 10.1051/0004-6361/201118735e