GRB 071031: VLT high-resolution spectroscopy. Ledoux, C. ; Jakobsson, P. ; Jaunsen, A. O. ; Thoene, C. C. ; Vreeswijk, P. M. ; Malesani, D. ; Fynbo, J. P. U. ; Hjorth, J. Abstract Publication: GRB Coordinates Network Pub Date: 2007 Bibcode: 2007GCN..7023....1L