Discovery of an X-ray QSO

The space dinsity of the Markarian galaxies including a region of thesouth galactic hemisphere.

J. P. Huchra, W. L. W. Sargent · The Astrophysical Journal · 1973 · 102 citations

Curtis Schmidt-thin prism survey for extragalactic emission-line objects - University of Michigan List I

G. M. MacAlpine, Scott Smith, David Lewis · The Astrophysical Journal Supplement Series · 1977 · 78 citations

Detection of X-Ray Emission from 3c 273 and NGC 5128

C. Stuart Bowyer, M. Lampton, J. Mack et al. · The Astrophysical Journal · 1970 · 72 citations

Emission-line galaxies and quasars in the Southern Hemisphere. I - Description and applications of an objective-prism survey

M. G. Smith · The Astrophysical Journal · 1975 · 72 citations

An optical catalog of quasi-stellar objects

G. R. Burbidge, A. H. Crowne, H. E. Smith · The Astrophysical Journal Supplement Series · 1977 · 60 citations