GRB 080916C: GROND confirmation of the optical afterglow. Clemens, C. ; Rossi, A. ; Greiner, J. ; McBreen, S. ; Kruehler, T. ; Yoldas, A. ; Yoldas, A. K. ; Szokoly, G. Abstract Publication: GRB Coordinates Network Pub Date: 2008 Bibcode: 2008GCN..8273....1C