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JINA - Virtual Journal of Nuclear Astrophysics, 20 January 2017
Volume 15, Issue 3 (36 Articles)
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# 29 - Chemical Evolution of the Universe at 0.7 < z < 1.6 Derived from Abundance Diagnostics of the Broad-line Region of Quasars
H. Sameshima
,
Y. Yoshii,
,
K. Kawara
The Astrophysical Journal
http://iopscience.iop.org/0004-637X/834/2/203