GRB030725: optical observations. Jorgensen, S. F. ; Vinter, C. ; Cassan, A. ; Jensen, B. L. ; Gorosabel, J. ; Fynbo, J. P. U. ; Hjorth, J. ; Pedersen, K. Abstract Publication: GRB Coordinates Network Pub Date: 2003 Bibcode: 2003GCN..2344....1J