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https://glossarissimo.wordpress.com/2018/07/09/ru-%d1%8d%d0%bb%d0%b5%d0%ba%d1%82%d1%80%d0%be%d0%bd%d0%bd%d1%8b%d0%b9-%d1%81%d1%82%d0%b0%d1%82%d0%b8%d1%81%d1%82%d0%b8%d1%87%d0%b5%d1%81%d0%ba%d0%b8%d0%b9-%d1%81%d0%bb%d0%be%d0%b2%d0%b0%d1%80/
(RU) - Электронный статистический словарь | StatSoft, Inc