BeppoSAX spectral survey of BL Lacs – New spectra and results V. Beckmann, A. Wolter, A. Celotti, L. Costamante, G. Ghisellini, T. Maccacaro and G. Tagliaferri A&A, 383 2 (2002) 410-422 Published online: 15 February 2002 DOI: 10.1051/0004-6361:20011752