GRB 180720B: OAJ optical observations. Izzo, L. ; Kann, D. A. ; de Ugarte Postigo, A. ; Thoene, C. C. ; Bensch, K. ; Blazek, M. ; Diaz-Martin, M. C. ; Rodriguez-Llano, S. Abstract Publication: GRB Coordinates Network Pub Date: 2018 Bibcode: 2018GCN.23040....1I