Analysis of information sources in references of the Wikipedia article "Supermasivna crna rupa" in Croatian language version.
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(pomoć). Bibcode:2008ApJ...689.1044G. doi:10.1086/592738|arxiv=
(pomoć). Bibcode:2008ApJ...689.1044G. doi:10.1086/592738|arxiv=
(pomoć). Bibcode:2008ApJ...689.1044G. doi:10.1086/592738|first=
(pomoć)|first=
(pomoć)