M22 (Bulgarian Wikipedia)

Analysis of information sources in references of the Wikipedia article "M22" in Bulgarian language version.

refsWebsite

Global rank Bulgarian rank

18^th place

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1,342^nd place

7,789^th place

harvard.edu

Monaco, L.; Pancino, E.; Ferraro, F. R.; Bellazzini, M. (2004). "Wide-field photometry of the Galactic globular cluster M22". Monthly Notices of the Royal Astronomical Society 349 (4): 1278 – 1290.
# ^ Shapley, Harlow (1930). "The Mass-Spectrum Relation for Giant Stars in the Globular Cluster Messier 22". Harvard College Observatory Bulletin 874: 4-9.
Arp, H. C.; Melbourne, W. G. (1959). "Color-magnitude diagram for the globular cluster M22". The Astronomical Journal 64: 28.