GRB 021219: The first Gamma-Ray Burst localized in real time with IBAS S. Mereghetti, D. Götz, V. Beckmann, A. von Kienlin, P. Ubertini, A. Bazzano, L. Foschini and G. Malaguti A&A, 411 1 (2003) L311-L314 Published online: 17 November 2003 DOI: 10.1051/0004-6361:20031303