TY - JOUR AU - V. D'Alessio AU - L. Piro AU - E. Rossi BT - Astronomy and Astrophysics DA - Jan-12-2006 DO - 10.1051/0004-6361:20054501 PY - 2006 SP - 653 EP - 664 T2 - Astronomy and Astrophysics TI - Properties of X-ray rich gamma ray bursts and X-ray flashes detected with BeppoSAX and Hete-2 UR - http://www.aanda.org/10.1051/0004-6361:20054501 VL - 460 SN - 0004-6361 ER -