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- [23] Space telescope imaging spectrograph echelle observations of the Seyfert galaxy NGC 4151: Physical conditions in the ultraviolet absorbers ASTROPHYSICAL JOURNAL, 2001, 551 (02): : 671 - 686
- [24] The nuclear regions of the Seyfert galaxy NGC 4151: Parsec-scale HI absorption and a remarkable radio jet ASTROPHYSICAL JOURNAL, 2003, 583 (01): : 192 - 204
- [26] WARM ABSORBERS AND OUTFLOWS IN THE SEYFERT-1 GALAXY NGC 4051 ASTROPHYSICAL JOURNAL, 2012, 746 (01):
- [27] Long-term variability in the optical spectrum of the Seyfert galaxy NGC 2992 ASTRONOMICAL JOURNAL, 2008, 135 (06): : 2048 - 2054
- [28] X-ray variability characteristics of the Seyfert 1 galaxy NGC 3783 ASTROPHYSICAL JOURNAL, 2005, 635 (01): : 180 - 197
- [30] A variability study of the Seyfert 2 galaxy NGC 6300 with XMM-Newton ASTROPHYSICAL JOURNAL, 2005, 632 (02): : 793 - 798