GRB 190627A: NUTTelA-TAO optical counterpart observations. Pozanenko, A. ; Volnova, A. ; Krugov, M. ; Reva, I. ; Minaev, P. ; Grossan, B. ; Mazaeva, E. Abstract Publication: GRB Coordinates Network Pub Date: 2019 Bibcode: 2019GCN.24900....1P