GRB 060121: swift XRT refined analysis. Mangano, V. ; La Parola, V. ; Mineo, T. ; O'Brien, P. ; Romano, P. ; Burrows, D. N. ; Chester, M. ; Angelini, L. Abstract Publication: GRB Coordinates Network Pub Date: 2006 Bibcode: 2006GCN..4565....1M