Kumar, P; McMahon, E; Panaitescu, A; Willingale, R; O'Brien, P; Burrows, D; Cummings, J; ... Zane, S; + view all Kumar, P; McMahon, E; Panaitescu, A; Willingale, R; O'Brien, P; Burrows, D; Cummings, J; Gehrels, N; Holland, S; Pandey, SB; Berk, DV; Zane, S; - view fewer (2007) The nature of the outflow in gamma-ray bursts. Monthly Notices of the Royal Astronomical Society: Letters , 376 (1) L57 - L61. 10.1111/j.1365-2966.2007.00286.x.