BAT trigger 633105 (GRB 150301C): NOT r-band upper limit. Cano, Z. ; Malesani, D. ; Fynbo, J. P. U. ; de Ugarte Postigo, A. ; Tanvir, N. R. ; Jakobsson, P. ; Saajasto, M. ; Pursimo, T. Abstract Publication: GRB Coordinates Network Pub Date: 2015 Bibcode: 2015GCN.17543....1C