http://www.svoboda.org/articleprintview/27011853.html
http://r-studies.org/cms/index.php?action=news/view_details&news_id=3900&lang=ukr
http://r-studies.org/cms/index.php?action=news/view_details&news_id=3906&lang=ukr
http://r-studies.org/cms/index.php?action=news/view_details&news_id=3935&lang=ukr