NGC 520 (Swedish Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 520" in Swedish language version.

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caltech.edu

nedipac.caltech.edu

”NASA/IPAC Extragalactic Database”. Results for NGC 520. http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+520&img_stamp=yes&extend=no. Läst 22 december 2006.
”Distance Results for NGC 0520”. NASA/IPAC Extragalactic Database. http://nedwww.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+0520. Läst 5 maj 2010.

doi.org

dx.doi.org

Ho, Luis C.; Filippenko, Alexei V.; Sargent, Wallace L. W. (October 1997). ”A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies”. Astrophysical Journal Supplement "112": ss. 315–390. doi:10.1086/313041. http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1997ApJS..112..315H.

harvard.edu

adsabs.harvard.edu

Ho, Luis C.; Filippenko, Alexei V.; Sargent, Wallace L. W. (October 1997). ”A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies”. Astrophysical Journal Supplement "112": ss. 315–390. doi:10.1086/313041. http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1997ApJS..112..315H.