Photometric properties and origin of bulges in SB0 galaxies J. A. L. Aguerri, N. Elias-Rosa, E. M. Corsini and C. Muñoz-Tuñón A&A, 434 1 (2005) 109-122 Published online: 01 April 2005 DOI: 10.1051/0004-6361:20041743