GRB021219, optical observation by MASTER. Lipunov, V. ; Krylov, A. ; Kornilov, V. ; Borisov, G. ; Kuvshinov, D. ; Kuznetcov, M. ; Patanin, S. Abstract Publication: GRB Coordinates Network Pub Date: 2002 Bibcode: 2002GCN..1770....1L