A time delay for the cluster-lensed quasar SDSS J1004+4112 מאת Fohlmeister, J, Kochanek, C, Falco, E, Wambsganss, J, Morgan, N, Morgan, C, Üfek, E, Maoz, D, Keeton, C, Barentine, J, Dalton, G, Dembicky, J, Ketzeback, W, McMillan, R, Peters, C