REM observations of GRB 060418 and GRB 060607A: the onset of the afterglow and the initial fireball Lorentz factor determination
, , , , , , , , , et al. (25 more)
A&A, 469 1 (2007) L13-L16
Published online: 02 May 2007
DOI: 10.1051/0004-6361:20077388