Robuta

https://gcn.nasa.gov/circulars/2853 GCN - Circulars - 2853 - GRB041217: The First GRB Located On-Board Swift the first on board gcn circulars https://gcn.nasa.gov/circulars/2855 GCN - Circulars - 2855 - GRB041217: P60 Optical Observations gcn circulars optical observations