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

Dietrich, M. et al.M. et al.DietrichWEI-HSIN SUN2018-09-102018-09-101993http://www.scopus.com/inward/record.url?eid=2-s2.0-12044257844&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/302966[SDGs]SDG17Steps 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 5548journal article10.1086/1725992-s2.0-12044257844