Konus-wind observation of very bright GRB 090427. Golenetskii, S. ; Aptekar, R. ; Mazets, E. ; Pal'Shin, V. ; Frederiks, D. ; Oleynik, P. ; Ulanov, M. ; Svinkin, D. ; Cline, T. Abstract Publication: GRB Coordinates Network Pub Date: 2009 Bibcode: 2009GCN..9296....1G