GRB 160623A: afterglow spectroscopy by GTC and independent redshift determination. Castro-Tirado, A. J. ; Valeev, A. F. ; Jeong, S. ; Sanchez-Ramirez, R. ; Sokolov, V. V. ; Ferrero, P. ; Tello, J. C. ; Hu, Y. ; Zhang, B. -B. ; Pozanenko, A. ; Oates, S. R. ; Geier, S. ; Lombardi, G. Abstract Publication: GRB Coordinates Network Pub Date: 2016 Bibcode: 2016GCN.19710....1C