Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. IV - Intensity variations of the optical emission lines of NGC 5548
scientific article published in the Astrophysical Journal
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author: Howard Alan Smith, Jill Bechtold, Martin Elvis, Wolfram Kollatschny, Hagai Netzer, Sylvain Veilleux, Claudia Lucia Mendes de Oliveira, Bradley Peterson, John Huchra, Richard W. Pogge, J. B. Hutchings, Robert Marcus Wagner
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