Articles citing this article

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Cited article:

The Discovery of a High‐Redshift X‐Ray–Emitting QSO Very Close to the Nucleus of NGC 7319

Pasquale Galianni, E. M. Burbidge, H. Arp, et al.
The Astrophysical Journal 620 (1) 88 (2005)
https://doi.org/10.1086/426886

Soft X-Ray Transients as Ultraluminous X-Ray Sources

Chang-Hwan Lee and Gerald E. Brown
Publications of the Astronomical Society of Japan 56 (2) 347 (2004)
https://doi.org/10.1093/pasj/56.2.347

Astrophysics in 2003

Virginia Trimble and Markus J. Aschwanden
Publications of the Astronomical Society of the Pacific 116 (817) 187 (2004)
https://doi.org/10.1086/383241

QSOs and Active Galactic Nuclei Associated with NGC 2639

E. Margaret Burbidge, Geoffrey Burbidge, Halton C. Arp and Stefano Zibetti
The Astrophysical Journal Supplement Series 153 (1) 159 (2004)
https://doi.org/10.1086/421465

QSOs Associated with M82

E. Margaret Burbidge, Geoffrey Burbidge, Halton C. Arp and Stefano Zibetti
The Astrophysical Journal 591 (2) 690 (2003)
https://doi.org/10.1086/375411