D.W. Anthony, The Horse, the Wheel and Language. How Bronze Age Riders from the Eurasian Steppes shaped the modern world (Princeton and Oxford 2007).
S. Hansen, The Iconography of Inequality. In: S. Hansen / J. Müller (eds.), Rebellion andInequality in Archaeology. Proceedings of the Kiel Workshops "Archaeology of Rebellion" (2014) and "Social Inequality as a Topic in Archaeology" (2015) (Bonn 2017) 113-134.
Ph. L. Kohl, The Making of Bronze Age Eurasia (Cambridge 2007).