Сигма (телеканал, Мариуполь) is the television channel founded in 1992.
According to PR-model, sigmatv.com.ua is ranked 946,217th in multilingual Wikipedia, in particular this website is ranked 132,334th in Russian Wikipedia.
The website is placed before tove-skutnabb-kangas.org and after informaticspublishing.com in the BestRef global ranking of the most important sources of Wikipedia.