X-rays from T Tauri: a test case for accreting T Tauri stars M. Güdel, S. L. Skinner, S. Yu. Mel'nikov, M. Audard, A. Telleschi and K. R. Briggs A&A, 468 2 (2007) 529-540 Published online: 02 January 2007 DOI: 10.1051/0004-6361:20066318