Arc sensitivity to cluster ellipticity, asymmetries, and substructures M. Meneghetti, R. Argazzi, F. Pace, L. Moscardini, K. Dolag, M. Bartelmann, G. Li and M. Oguri A&A, 461 1 (2007) 25-38 Published online: 27 September 2006 DOI: 10.1051/0004-6361:20065722