GRB 011211: evidence for an optical break. Holland, S. ; Berlind, P. ; Bersier, D. ; Jha, S. ; Stanek, K. Z. ; Soszynski, I. ; Garnavich, P. M. Abstract Publication: GRB Coordinates Network Pub Date: 2001 Bibcode: 2001GCN..1204....1H