NGC 561 (Czech Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 561" in Czech language version.

refsWebsite

Global rank Czech rank

1web.archive.org

1^st place

1^st place

low place

low place

cseligman.com

SELIGMAN, Courtney. Celestial Atlas: NGC 561 [online]. [cit. 2019-11-28]. Dostupné online. (anglicky)

web.archive.org

FROMMERT, Hartmut. Revised NGC Data for NGC 561 [online]. SEDS.org [cit. 2019-11-28]. Dostupné v archivu pořízeném dne 2013-10-06. (anglicky)