GRB 140515A: Spectroscopy from the 10.4m GTC. de Ugarte Postigo, A. ; Gorosabel, J. ; Thoene, C. C. ; Cabrera-Lavers, A. ; Reverte, D. ; Alvarez, C. Abstract Publication: GRB Coordinates Network Pub Date: 2014 Bibcode: 2014GCN.16279....1D