GRB 141109B: BOOTES-4 and TERSKOL optical upper limit. Sokolov, I. V. ; Moskvitin, A. ; Sokolov, V. V. ; Guziy, S. ; Castro-Tirado, A. J. ; Tello, J. C. ; Fan, Y. ; Zhao, X. ; Bai, J. ; Wang, Ch. ; Xin, Y. Abstract Publication: GRB Coordinates Network Pub Date: 2014 Bibcode: 2014GCN.17047....1S