Osterbrock, Donald E.
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- Djorgovski, S. and Meylan, G. (1989) An Optical Imaging Search for Gravitational Lenses; ISBN 9780792302568; Active Galactic Nuclei; 269-270; 10.1017/S0074180900141038
- Neugebauer, G. and Sanders, D. B., et el. (1989) Spectral Energy Distributions of PG Quasars; ISBN 0-7923-0256-7; Active Galactic Nuclei; 390-392
- Pearson, T. J. and Readhead, A. C. S. (1989) The Milliarcsecond Structure of Active Galactic Nuclei Observed with VLBI; ISBN 9780792302568; Active Galactic Nuclei; 525-528; 10.1017/S0074180900141877
- Keene, J. and Neugebauer, G., et el. (1989) Millimeter Observations of Optically Selected Quasars; ISBN 0-7923-0256-7; Active Galactic Nuclei; 396-397