In quest of quasars

Black holes, quasars & the universe

Quasi-stellar objects

A catalogue of quasars and active nuclei

Gravity's Fatal Attraction

Quasi-stellar objects

Quasars

Quasar astronomy

Quasars

Asteroids to quasars

Quasars and black holes.

Quasars, pulsars, and black holes

Mysteries of deep space

Quasars and Active Galactic Nuclei

Was sind Quasare?

Quasars

Quasars, their importance in astronomy and physics

Galaxies, quasars, and cosmology

GravItational Lensing of Quasars

The broad-band x-ray spectrum of a QSO sample

Quasars and pulsars

Galaxies and quasars

The space distribution of quasars

Proceedings of a workshop on optical surveys for quasars

The dust-to-gas ratio in the damped LyÜ clouds toward the gravitationally lensed QSO 0957+561

Our evolving universe

[An astrophysics data program investigation of a synoptic study of quasar continua

[A long-term space astrophysics research program]

[A long-term space astrophysics research program]

[A long-term space astrophysics research program]

Nearly simultaneous optical, ultraviolet, and X-ray observations of three PG quasars

Quasi-Stellar Objects

Les Quasars

Les Quasars, radiosources quasi stellaires

Quasi-stellar objects in a cyclic universe

Le radiosorgenti quasi-stellari (Quasars)

Optical brightness and polarization of quasars and related objects

Black hole masses, metallicities, and emission line properties of quasars

Optical and x-ray selected samples of quasars

Quasi-stellar objects