CAIXA: a catalogue of AGN in the XMM-Newton archive - I. Spectral analysis S. Bianchi, M. Guainazzi, G. Matt, N. Fonseca Bonilla and G. Ponti A&A, 495 2 (2009) 421-430 Published online: 22 December 2008 DOI: 10.1051/0004-6361:200810620