XMM-Newton observation of the Tycho supernova remnant A. Decourchelle, J. L. Sauvageot, M. Audard, B. Aschenbach, S. Sembay, R. Rothenflug, J. Ballet, T. Stadlbauer and R. G. West A&A, 365 1 (2001) L218-L224 Published online: 15 January 2001 DOI: 10.1051/0004-6361:20000115