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Ish: Nuclear activity of NGC 5548 from UBVRI observations during 1990–2000

1. Steps toward Determination of the Size and Structure of the Broad‐Line Region in Active Galactic Nuclei. XVI. A 13 Year Study of Spectral Variability in NGC 5548

   B. M. Peterson, P. Berlind, Ray Bertram +38

   MaqolaOAOchiq kirish20021 iqtibos

   ABIABI:AkademIndex/2026.other.804408