TY  - RPRT
TI  - X-ray selected quasars and Seyfert galaxies - Cosmological evolution, luminosity function, and contribution to the X-ray background
AU  - Maccacaro, T.
AU  - Gioia, I. M.
AU  - Stocke, J. T.
PY  - 1984
UR  - https://ntrs.nasa.gov/citations/19840065116
ID  - 19840065116
ER  -