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2003ChJAA...3..423W - Chinese J. Astron. Astrophys., 3, 423-430 (2003)
Discovery of five narrow-line Seyfert 1 galaxies and implications on the NLS1 model.
WU J.-H., HE X.-T., CHEN Y. and VOGES W.
Journal keyword(s):
CDS comments: PG 1704 = PG 1704+608
Simbad objects: 7
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