GRB 130609B: theoretical redshift estimation. Ruffini, R. ; Bianco, C. L. ; Enderli, M. ; Muccino, M. ; Penacchioni, A. V. ; Pisani, G. B. ; Rueda, J. A. ; Sahakyan, N. ; Wang, Y. ; Izzo, L. Abstract Publication: GRB Coordinates Network Pub Date: 2013 Bibcode: 2013GCN.14888....1R