{A Redshift Determination for XRF 020903: First Spectroscopic Observations of an X-Ray Flash}
Publication information:
{Soderberg}, {Kulkarni}, {Berger}, {Fox}, {Price}, {Yost}, {Hunt}, {Frail}, {Walker}, {Hamuy}, et al. {A Redshift Determination for XRF 020903: First Spectroscopic Observations of an X-Ray Flash}. \apj. 2004;606:994–999. doi:10.1086/383082