GRB 121226A: 10.4m GTC optical observations. Castro-Tirado, A. J. ; Jelinek, M. ; Tello, J. C. ; Guziy, S. ; Perez-Ramirez, D. ; Ferrero, P. ; Castro Ceron, J. M. ; Fernandez-Soto, A. ; Gorosabel, J. Abstract Publication: GRB Coordinates Network Pub Date: 2012 Bibcode: 2012GCN.14114....1C