1)http://russia-ic.com/culture_art/music/405/
2)http://www.russia.com/
3)https://www.cia.gov/library/publications/the-world-factbook/geos/rs.html
4)http://www.state.gov/r/pa/ei/bgn/3183.htm
5)http://www.russiatoday.ru/
6)http://www.geographia.com/russia/
