Aoki, Kentaro; Toshihiro Kawaguchi; Kouji Ohta (January 2005). «The Largest Blueshifts of the [Ο III] Emission Line in Two Narrow-Line Quasars». Astrophysical Journal618 (2): 601–608. doi:10.1086/426075. Bibcode: 2005ApJ...618..601A.
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Aoki, Kentaro; Toshihiro Kawaguchi; Kouji Ohta (January 2005). «The Largest Blueshifts of the [Ο III] Emission Line in Two Narrow-Line Quasars». Astrophysical Journal618 (2): 601–608. doi:10.1086/426075. Bibcode: 2005ApJ...618..601A.