GRB 140508A: SAO RAS and MASTER photometric and spectroscopic observations. Moskvitin, A. S. ; Makarov, D. I. ; Valeev, A. F. ; Sokolov, V. V. ; Castro-Tirado, A. J. ; Gorosabel, J. ; Gorbovskoy, E. S. ; Denisenko, D. V. ; Lipunov, V. M. Abstract Publication: GRB Coordinates Network Pub Date: 2014 Bibcode: 2014GCN.16228....1M