XRF 020903: flattening of the optical light curve. Gorosabel, J. ; Hjorth, J. ; Pedersen, H. ; Jensen, B. L. ; Fynbo, J. P. U. ; Andersen, M. ; Castro Cerón, J. M. ; Castro-Tirado, A. J. Abstract Publication: GRB Coordinates Network Pub Date: 2002 Bibcode: 2002GCN..1631....1G