Interweaving worlds: systemic interactions in Eurasia, 7th to 1st millennia BC; papers from a Conference in Memory of Professor Andrew Sherratt, [University of Sheffield on 1st - 4th April 2008]; What would a Bronze Age world system look like? World systems approaches to Europe and western Asia 4th to 1st millennia BC - Wilkinson, Toby C.; Sherratt, Susan; Bennet, John (Oxbow, 2011)