GRB 130502A: z-band observations from GTC. de Ugarte Postigo, A. ; Gorosabel, J. ; Tanvir, N. ; Fynbo, J. P. U. ; Cabrera-Lavers, A. ; Thoene, C. C. Abstract Publication: GRB Coordinates Network Pub Date: 2013 Bibcode: 2013GCN.14533....1D