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- [5] EXOSAT OBSERVATIONS OF FLUX AND SPECTRAL VARIABILITY IN THE SEYFERT-GALAXY NGC5548 IAU SYMPOSIA, 1989, (134): : 177 - 178
- [8] Spectroscopic variability of NGC5548 and IC4329A on timescales of days to years NEW CENTURY OF X-RAY ASTRONOMY, 2001, 251 : 356 - 357
- [9] UBVRI simultaneous observations of the nucleus of Seyfert galaxy NGC 5548 in 1993-1999 1600, EDP Sciences (387):
- [10] Photometric variability and astrometric stability of the radio continuum nucleus in the Seyfert galaxy NGC 5548 ASTROPHYSICAL JOURNAL, 2000, 531 (02): : 716 - 726