NGC 660 (Czech Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 660" in Czech language version.

refsWebsite

Global rank Czech rank

887^th place

1,663^rd place

1web.archive.org

1^st place

1^st place

low place

low place

caltech.edu (Global: 887^th place; Czech: 1,663^rd place)

ned.ipac.caltech.edu

NASA/IPAC Extragalactic Database: Results for NGC 660 [online]. [cit. 2019-11-28]. Dostupné online. (anglicky)

cseligman.com (Global: low place; Czech: low place)

SELIGMAN, Courtney. Celestial Atlas: NGC 660 [online]. [cit. 2019-11-28]. Dostupné online. (anglicky)

web.archive.org (Global: 1^st place; Czech: 1^st place)

FROMMERT, Hartmut. Revised NGC Data for NGC 660 [online]. SEDS.org [cit. 2019-11-28]. Dostupné v archivu pořízeném dne 2016-03-04. (anglicky)