Antonio Alvarez Nuñez.Galician Petroglyphs in the valley of the river Lеrez, Pontevedra. URL: www.rupestre.net/tracce/?p=577
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Имеется в виду традиционный летний галисийский праздник Рапа-дас-Бестас.
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Robin Bendrey. From Wild Horses to Domestic Horses: A European Perspective // World Archaeology 44, 2012. P. 135–157.
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David W. Anthony. The Horse, the Wheel, and Language: How Bronze-Age Riders from the Eurasian Steppes Shaped the Modern World. Princeton: Princeton University Press, 2007.
