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Markarjan 421 (German Wikipedia)

Analysis of information sources in references of the Wikipedia article "Markarjan 421" in German language version.

refsWebsite
Global rank German rank
1caltech.edu
887th place
744th place
1u-strasbg.fr
1,342nd place
799th place

caltech.edu

ned.ipac.caltech.edu

u-strasbg.fr

simbad.u-strasbg.fr