Keyser, C.; Bouakaze, C.; Crubézy, E.; Nikolaev, V. G.; Montagnon, D.; Reis, T.; Ludes, B. (2009). "Ancient DNA provides new insights into the history of south Siberian Kurgan people". Human Genetics. 126 (3). ss. 395-410. doi:10.1007/s00439-009-0683-0. PMID19449030.
Keyser, C.; Bouakaze, C.; Crubézy, E.; Nikolaev, V. G.; Montagnon, D.; Reis, T.; Ludes, B. (2009). "Ancient DNA provides new insights into the history of south Siberian Kurgan people". Human Genetics. 126 (3). ss. 395-410. doi:10.1007/s00439-009-0683-0. PMID19449030.
nytimes.com
"Russians Find Few Barriers to Joining Ukraine Battle 21 Haziran 2019 tarihinde Wayback Machine sitesinde arşivlendi." The New York Times June 9, 2014. - "... among eastern Ukrainian militants, Cossack symbols like sheepskin hats, or the Don Cossack symbol of a stag struck by an arrow — meaning it is better to die free than to live like a slave — are commonplace."
"Russians Find Few Barriers to Joining Ukraine Battle 21 Haziran 2019 tarihinde Wayback Machine sitesinde arşivlendi." The New York Times June 9, 2014. - "... among eastern Ukrainian militants, Cossack symbols like sheepskin hats, or the Don Cossack symbol of a stag struck by an arrow — meaning it is better to die free than to live like a slave — are commonplace."