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1999A&AS..139..575W - Astron. Astrophys., Suppl. Ser., 139, 575-599 (1999/November-1)
An AGN sample with high x-ray-to-optical flux ratio from RASS. I. The optical identification.
WEI J.Y., XU D.W., DONG X.Y. and HU J.Y.
Abstract (from CDS):
Abstract Copyright: ∼
Journal keyword(s): surveys - X-rays: general - X-rays: galaxies - galaxies: active
VizieR on-line data: <Available at CDS (J/A+AS/139/575): table2.dat>
Nomenclature: Table 2: [WXD99] JHHMMSS.ss+DDMMSS.s N=174.
Simbad objects: 192