Article ISI
Astronomy & Astrophysics  (2012)

Unveiling the nature of INTEGRAL objects through optical spectroscopy IX. Twenty two more identifications, and a glance into the far hard X-ray Universe

Masetti N., Parisi; P., Jimenez-Bailon; E, Palazzi E.; Chavushyan V., Bassani; L, Bazzano; A, Bird A.J.; Dean A.J., Galaz; G., Landi; R, Malizia; A, Minniti D.; Morelli, L.; Schiavone, F; Stephen J.B., Ubertini