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- [4] HARD X-RAY-EMISSION FROM A TYPE-2 SEYFERT-GALAXY (NGC-1068) ASTROPHYSICAL JOURNAL, 1988, 331 (01): : 161 - 171
- [6] X-ray spectral variability of the seyfert galaxy NGC 4593 Astronomy and Astrophysics, 1993, 273 (02):
- [8] THE PATTERN OF VARIABILITY OF THE FAR UV SPECTRUM OF THE SEYFERT-I GALAXY NGC-4593 PHYSICA SCRIPTA, 1984, T7 : 170 - 171
- [9] DETECTION OF HARD X-RAY-EMISSION FROM A TYPE-2 (QUESTIONABLE) SEYFERT-GALAXY PROCEEDINGS OF THE 23RD ESLAB SYMPOSIUM ON TWO TOPICS IN X-RAY ASTRONOMY, VOLS 1 AND 2: X-RAY BINARIES; AGN AND THE X-RAY BACKGROUND, 1989, 296 : 1059 - 1064
- [10] AN X-RAY IMAGE OF THE SEYFERT-GALAXY NGC-1068 ASTROPHYSICAL JOURNAL, 1992, 391 (02): : L75 - L79