The Calan-Yale Deep Extragalactic Research (CYDER) survey: Optical properties and deep spectroscopy of serendipitous X-ray sources
Treister, Ezequiel; Castander, Francisco J.; Maccarone, Thomas J.; Gawiser, Eric; Coppi, Paolo S.; Urry, C. Megan; Maza Sancho, José; Herrera, David; González, Valentino; Montoya, Carlos; Pineda Bravo, Pedro (IOP PUBLISHING, 2005-03-01)