GRB 121117A: terskol obseravtions. Sokolov, I. V. ; Sergeev, A. V. ; Andreev, M. V. ; Petkov, V. B. ; Moskvitin, A. S. ; Komarova, V. N. Abstract Publication: GRB Coordinates Network Pub Date: 2012 Bibcode: 2012GCN.14004....1S