Butler, Reginald ChristopherReginald ChristopherButlerPiro, LLPiroAmati, LLAmatiAntonelli, L AL AAntonelli2020-09-172020-09-172008-01-01https://hdl.handle.net/20.500.13025/2653enburstsgamma raysraysEvidence for a late-time outburst of the X-ray afterglow of GB970508 from BeppoSAXletter to the editorhttp://arxiv.org/pdf/astro-ph/9710355.pdfhttps://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=01c595d3a0ffb26d43b2b64a3c14579a8b74066a54dcce0a8580fe1368eeb2f6