Robuta

https://gcn.nasa.gov/circulars/1405 GCN - Circulars - 1405 - GRB020531: optical observations gcn circulars optical observations https://test.gcn.nasa.gov/circulars/1411 GCN - Circulars - 1411 - GRB020531: Upper Limit for Detection of Two TAROT Sources https://test.gcn.nasa.gov/circulars/1402 GCN - Circulars - 1402 - IPN triangulation of the short, hard GRB020531 (=H2042) of the gcn circulars ipn triangulation https://gcn.nasa.gov/circulars/1401 GCN - Circulars - 1401 - GRB020531(=H2042): Optical Observations gcn circulars optical observations https://test.gcn.nasa.gov/circulars/1434 GCN - Circulars - 1434 - Fading Optical Source in the Field of GRB020531 in the field gcn circulars fading optical https://gcn.nasa.gov/circulars/1422 GCN - Circulars - 1422 - GRB020531, BVRcIc field photometry gcn circulars field photometry