The BeppoSAX broad-band spectrum and variability of the Seyfert 1 NGC 3783 A. De Rosa, L. Piro, F. Fiore, P. Grandi, L. Maraschi, G. Matt, F. Nicastro and P. O. Petrucci A&A, 387 3 (2002) 838-849 Published online: 17 May 2002 DOI: 10.1051/0004-6361:20020444