Bortleova stupnice (Czech Wikipedia)

Analysis of information sources in references of the Wikipedia article "Bortleova stupnice" in Czech language version.

refsWebsite

Global rank Czech rank

low place

low place

1web.archive.org

1^st place

1^st place

nitelite.eu

BAREŠ, Michal. Nitelite.eu - Bortle scale [online]. Dostupné online.

web.archive.org

Astronomické události - B3 v Jizerkách [online]. 2010 [cit. 2015-01-30]. Dostupné v archivu pořízeném dne 2015-04-03.