XMM-Newton broad-band observations of NGC 7582: N variations and fading out of the active nucleusE. Piconcelli, S. Bianchi, M. Guainazzi, F. Fiore and M. ChiabergeA&A, 466 3 (2007) 855-863DOI: https://doi.org/10.1051/0004-6361:20066439