GRB 090902B: GROND NIR afterglow observations. Olivares, F. ; Afonso, P. ; Greiner, J. ; McBreen, S. ; Kruehler, T. ; Rau, A. ; Yoldas, A. ; Kanbach, G. ; Klose, S. Abstract Publication: GRB Coordinates Network Pub Date: 2009 Bibcode: 2009GCN..9874....1O