The Cosmic X-Ray Background and QSOs to B < 22: A Search for Correlated Fluctuations Wu, X. ; Anderson, S. F. ; Margon, B. ; Schechter, P. L. ; White, S. D. M. Abstract Publication: Bulletin of the American Astronomical Society Pub Date: March 1991 Bibcode: 1991BAAS...23..957W