GRB 160303A: X-shooter spectroscopy. de Ugarte Postigo, A. ; Malesani, D. ; Kruehler, T. ; Xu, D. ; Schulze, S. ; Hjorth, J. ; Tanvir, N. R. Abstract Publication: GRB Coordinates Network Pub Date: 2016 Bibcode: 2016GCN.19154....1D