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- [2] CORRELATED X-RAY AND MILLIMETER VARIABILITY OF THE BLAZAR 3C273 MULTI-WAVELENGTH CONTINUUM EMISSION OF AGN, 1994, (159): : 193 - 196
- [3] Soft X-ray variability of the bright quasar 3C273 Journal of Astrophysics and Astronomy, 2001, 22 : 283 - 292
- [9] Complex X-ray spectral variability during flaring in 3C 273 BL LAC PHENOMENON, 1999, 159 : 192 - 193