Resolving the L/T transition binary SDSS J2052-1609 AB M. B. Stumpf, K. Geißler, H. Bouy, W. Brandner, B. Goldman and Th. Henning A&A, 525 (2011) A123 Published online: 07 December 2010 DOI: 10.1051/0004-6361/201015392