Harrison, Fiona (1999). «Optical and Radio Observations of the Afterglow from GRB 990510: Evidence for a Jet». Astrophysical Journal Letters523 (2): L121-L124. Bibcode:1999ApJ...523L.121H. doi:10.1086/312282.
Harrison, Fiona (1999). «Optical and Radio Observations of the Afterglow from GRB 990510: Evidence for a Jet». Astrophysical Journal Letters523 (2): L121-L124. Bibcode:1999ApJ...523L.121H. doi:10.1086/312282.