Εξάδα του Σίφερτ (Greek Wikipedia)

Analysis of information sources in references of the Wikipedia article "Εξάδα του Σίφερτ" in Greek language version.

refsWebsite

Global rank Greek rank

1hubblesite.org

6,632^nd place

4,099^th place

2^nd place

3^rd place

18^th place

57^th place

887^th place

1,225^th place

caltech.edu

ned.ipac.caltech.edu

«NASA/IPAC Extragalactic Database». Results for NGC 6027d. Ανακτήθηκε στις 2 Απριλίου 2013.

doi.org

dx.doi.org

C. K. Seyfert (1951). «A Dense Group of Galaxies in Serpens». Publications of the Astronomical Society of the Pacific 371: 72–75. doi:10.1086/126319. Bibcode: 1951PASP...63...72S.

harvard.edu

adsabs.harvard.edu

C. K. Seyfert (1951). «A Dense Group of Galaxies in Serpens». Publications of the Astronomical Society of the Pacific 371: 72–75. doi:10.1086/126319. Bibcode: 1951PASP...63...72S.

hubblesite.org

http://hubblesite.org/newscenter/archive/releases/2002/22/image/a/