NGC 4981 (French Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 4981" in French language version.

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astrovalleyfield.ca

caltech.edu

ned.ipac.caltech.edu

cseligman.com

harvard.edu

cbat.eps.harvard.edu

ui.adsabs.harvard.edu

  • A.M. Garcia, « General study of group membership. II - Determination of nearby groups », Astronomy and Astrophysics Supplement Series, vol. 100 #1,‎ , p. 47-90 (Bibcode 1993A&AS..100...47G)

obs-hp.fr

atlas.obs-hp.fr

rochesterastronomy.org