Swift observations of IBL and LBL objects F. Massaro, P. Giommi, G. Tosti, A. Cassetti, R. Nesci, M. Perri, D. Burrows and N. Gerehls A&A, 489 3 (2008) 1047-1054 Published online: 18 August 2008 DOI: 10.1051/0004-6361:200809824