NGC 6640 (Arabic Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 6640" in Arabic language version.

refsWebsite

Global rank Arabic rank

18^th place

33^rd place

43^rd place

2^nd place

harvard.edu

ui.adsabs.harvard.edu

Paturel G.; Dubois P.; Petit C.; Woelfel F. (2002), Comparison LEDA/SIMBAD octobre 2002. Catalogue to be published in 2003 (بالإنجليزية), Bibcode:2002LEDA.........0P, QID:Q66470150

wikidata.org

Paturel G.; Dubois P.; Petit C.; Woelfel F. (2002), Comparison LEDA/SIMBAD octobre 2002. Catalogue to be published in 2003 (بالإنجليزية), Bibcode:2002LEDA.........0P, QID:Q66470150