Osterhammel, J. "Commentary": Measuring Imperial 'Success' and 'Failure' / Jürgen Osterhammel. Comparing empires : encounters and transfers in the long nineteenth century.(2011).

Osterhammel, Jürgen. ""Commentary": Measuring Imperial 'Success' and 'Failure' / Jürgen Osterhammel." Comparing Empires : Encounters and Transfers in the Long Nineteenth Century.(2011) .

Osterhammel, Jürgen. ""Commentary": Measuring Imperial 'Success' and 'Failure' / Jürgen Osterhammel." Comparing Empires : Encounters and Transfers in the Long Nineteenth Century.(2011), .