TY - JOUR AU - D. Lazzati AU - Rosalba Perna AU - J. Flasher AU - V. Dwarkadas AU - Fabrizio Fiore BT - Monthly Notices of the Royal Astronomical Society DA - 11/2006 DO - 10.1111/j.1365-2966.2006.10984.x PY - 2006 SP - 1791 EP - 1798 T2 - Monthly Notices of the Royal Astronomical Society TI - Time-resolved spectroscopy of GRB 021004 reveals a clumpy extended wind VL - 372 SN - 0035-8711 ER -