XMM-Newton observations of the first unidentified TeV gamma-ray source TeV J2032+4130 D. Horns, A. I. D. Hoffmann, A. Santangelo, F. A. Aharonian and G. P. Rowell A&A, 469 1 (2007) L17-L21 Published online: 02 May 2007 DOI: 10.1051/0004-6361:20066836