GRB 090813: optical candidate from 1.23m CAHA telescope. Gorosabel, J. ; Terron, V. ; Fernandez, M. ; Kubanek, P. ; Jelinek, M. ; Castro-Tirado, A. J. Abstract Publication: GRB Coordinates Network Pub Date: 2009 Bibcode: 2009GCN..9782....1G