Цікаві матеріали

http://progranistik.blogspot.com/2013/12/blog-post.html

http://www.dw.de/%D1%83-%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D1%96%D1%81%D1%82%D1%96%D0%B2-%D0%BD%D0%B5%D0%BC%D0%B0%D1%94-%D1%88%D0%B0%D0%BD%D1%81%D1%96%D0%B2-%D0%BD%D0%B0-%D0%BF%D1%80%D0%BE%D0%B2%D0%B0%D0%BB/a-16301555-1

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