GRB 181213A: NOT optical observations. Heintz, K. E. ; Malesani, D. B. ; Fynbo, J. P. U. ; de Ugarte Postigo, A. ; Balaguer-Nunez, L. ; Carbajo, J. ; Galindo, F. ; Perez, C. Abstract Publication: GRB Coordinates Network Pub Date: 2018 Bibcode: 2018GCN.23537....1H