Hagen-Zanker, Jessica (2008): Why do people migrate? A review of the theoretical literature. Unpublished.
Hagen-Zanker, Jessica (2010): Modest expectations: Causes and effects of migration on migrant households in source countries. Published in: Boekenplan publisher, Maastricht, the Netherlands
Roelen, Keetie; Gassmann, Franziska and Neubourg, Chris de (2008): A global measurement approach versus a country-specific measurement approach – Do they draw the same picture of child poverty? The case of Vietnam. Unpublished.