Research Interests: Mongolian history, 13th century to the present; Sino-Mongolian and Russo-Mongolian relations.
Books and selected articles:
A History of Land Use in Mongolia: the Thirteenth Century to the Present (Palgrave/Macmillan, 2012).
Pages from the Past: The 1910 Moscow Trade Expedition to Mongolia (EastBridge, 2007).
The Modernization of Inner Asia (coauthor) (M.E. Sharpe, 1991).
Mongolian Rule in China: Local Administration in the Yuan Dynasty (Harvard University Press, 1989).
"The Persistence of Pastoral Nomadism," in Ts. Ishdorzh, ed., Essays on Mongol Studies (2005).
"The Mongols and China: Cultural Contacts and the Changing Nature of Pastoral Nomadism (Twelfth to Early Twentieth Centuries)", in Amitai and Biran, eds., Mongols, Turks, and Others: Eurasian Nomads and the Sedentary World (2005).
"The Yuan Government and Society," in Franke and Twitchett, ed.s, Cambridge History of China, Vol. VI (1994)
"Merchant Associations in Yuan China: the Ortogh," Asia Major (1989).