Depletion of background galaxies owing to the cluster lens CL0024+1654: U- and R-band observations
Rognvaldsson, O.E.; Greve, T.R.; Hjorth, J.; Gudmundsson, E.H.; Sigmundsson, V.S.; Jakobsson, P.; Jaunsen, A.O.; Christensen, L.; van Kampen, E.; Taylor, A.N. (2001)