U-band photometry of 17 WINGS clusters A. Omizzolo, G. Fasano, D. Reverte Paya, C. De Santis, A. Grado, D. Bettoni, B. Poggianti, M. D’Onofrio, A. Moretti, J. Varela et al. (5 more) A&A, 561 (2014) A111 Published online: 16 January 2014 DOI: 10.1051/0004-6361/201322924