NGC 420 (Italian Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 420" in Italian language version.

refsWebsite

Global rank Italian rank

low place

low place

18^th place

104^th place

cseligman.com

(EN) New General Catalog Objects: NGC 400 - 449, su cseligman.com. URL consultato l'8 marzo 2017.

harvard.edu

adsabs.harvard.edu

P. Fouque, E. Gourgoulhon e P. Chamaraux, Groups of galaxies within 80 Mpc. II - The catalogue of groups and group members, in Astronomy and Astrophysics Supplement Series, vol. 93, 1º maggio 1992, pp. 211–233. URL consultato l'8 marzo 2017.