Swift Observations of the LAT burst GRB 131231A. Mangano, V. ; Holland, S. T. ; Malesani, D. ; Barthelmy, S. D. ; Burrows, D. N. ; Kennea, J. A. ; Siegel, M. H. ; Gehrels, N. Abstract Publication: GCN Report Pub Date: 2014 Bibcode: 2014GCNR..458....1M