GRB 030227 optical afterglow. Gorosabel, J. ; Castro-Tirado, A. J. ; Reverte, D. ; Vilchez, J. ; Castro Cerón, J. M. ; de Ugarte Postigo, A. ; Guziy, S. ; Martinez, S. Abstract Publication: GRB Coordinates Network Pub Date: 2003 Bibcode: 2003GCN..1915....1G