K-band polarimetry of an Sgr A* flare with a clear sub-flare structure L. Meyer, R. Schödel, A. Eckart, V. Karas, M. Dovčiak and W. J. Duschl A&A, 458 2 (2006) L25-L28 Published online: 12 September 2006 DOI: 10.1051/0004-6361:20066251