GRB 180705A: RTT150 optical upper limit. Bikmaev, I. ; Irtuganov, E. ; Sakhibullin, N. ; Burenin, R. ; Pavlinsky, M. ; Sunyaev, R. ; Khamitov, I. ; Ozdemir, S. ; Gogus, E. Abstract Publication: GRB Coordinates Network Pub Date: 2018 Bibcode: 2018GCN.22929....1B