This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
References
Scoville, N. Z., Padin, S., Sanders, D. B., Soifer, B. T. & Yun, M. S. Astrophys. J. 415, L75–L77 (1993).
Antonucci, R. & Miller, J. Astrophys. J. 297, 621–632 (1985).
Barthel, P. Astrophys. J. 336, 606–611 (1989).
Sanders, D. B., Scoville, N. Z. & Soifer, B. T. Astrophys. J. 370, 158–171 (1991).
Antonucci, R. R. J. & Olszewski, E. W. Astr. J. 90, 2203–2206 (1985).
Sanders, D. B. et al. Astrophys. J. 325, 74–91 (1988).
Stockton, A. & Ridgeway, S. E. Astr. J. 102, 488–494 (1991).
Kormendy, J. Astrophys. J. 325, 128–141 (1988).
Sanders, D. B., Scoville, N. Z. & Soifer, B. T. Astrophys. J. 335, L1–L4 (1988).
Barvainis, R., Alloin, D. & Antonucci, R. Astrophys. J. 337, L69–L72 (1989).
Alloin, D., Barvainis, R., Gordon, M. A. & Antonucci, R. Astr. Astrophys. 265, 429–436 (1992).
Boroson, T. B. & Oke, J. B. Astrophys. J. 281, 535–544 (1984).
Kormendy, J. & Sanders, D. B. Astrophys. J. 390, L53–L56 (1992).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Barvainis, R. Steps to unification. Nature 366, 298–299 (1993). https://doi.org/10.1038/366298a0
Issue Date:
DOI: https://doi.org/10.1038/366298a0