HD 135344B: a young star has reached its rotational limit A. Müller, M. E. van den Ancker, R. Launhardt, J. U. Pott, D. Fedele and Th. Henning A&A, 530 (2011) A85 Published online: 16 May 2011 DOI: 10.1051/0004-6361/201116732