Broad Absorption Line Seyfert Galaxies (1990)
Conference Proceeding
Boroson, T., Meyers, K., Morris, S., & Persson, S. (1990). Broad Absorption Line Seyfert Galaxies. In Bulletin of the American Astronomical Society, Vol. 22

The Extended Medium Sensitivity Survey distant cluster sample - X-ray cosmological evolution (1990)
Journal Article
Gioia, I., Henry, J., Maccacaro, T., Morris, S., Stocke, J., & Wolter, A. (1990). The Extended Medium Sensitivity Survey distant cluster sample - X-ray cosmological evolution. Astrophysical Journal, 356, L35-L38. https://doi.org/10.1086/185744

On the Fraction of Optically-Selected QSOs with Broad Absorption Lines in Their Spectra (1990)
Conference Proceeding
Foltz, C., Chaffee, F., Hewett, P., Weymann, R., & Morris, S. (1990). On the Fraction of Optically-Selected QSOs with Broad Absorption Lines in Their Spectra. In Bulletin of the American Astronomical Society

The Einstein Observatory Extended Medium-Sensitivity Survey. I - X-ray data and analysis (1990)
Journal Article
Gioia, I., Maccacaro, T., Schild, R., Wolter, A., Stocke, J., Morris, S., & Henry, J. (1990). The Einstein Observatory Extended Medium-Sensitivity Survey. I - X-ray data and analysis. Astrophysical Journal Supplement, 72, 567-619

No evidence for radio-quiet BL Lacertae objects (1990)
Journal Article
Stocke, J. T., Morris, S. L., Gioia, I., Maccacaro, T., Schild, R., & Wolter, A. (1990). No evidence for radio-quiet BL Lacertae objects. Astrophysical Journal, 348, 141-146. https://doi.org/10.1086/168221