The Center for the Study of the Eurasian Nomads (CSEN)
Time Line for Cultures in the European Steppes, Western
Asiatic Steppes, Middle Asia, Central Asia, and China
After Koryakova: Ludmila Koryakova, "Social Trends
in Temperate Eurasia During the Second and First Millennia BC,"
Journal of European Archaeology, (1991) 4:243-280, Fig. 2.