​The new Handbook of Return Migration, edited by Russell King and Katie Kuschminder and published by Elgar, includes a chapter by PRIO Research Professor Marta Bivand Erdal and former PRIO Global Fellow and Senior Lecturer in Human Geography at the University of Sussex Ceri Oeppen, entitled "Theorising voluntariness in return".

Senior researcher Marta Bivand Erdal and Ceri Oeppen have co-edited a special issue of Journal of Ethnic and Migration Studies, Interactions between Integration and Transnationalism. The special issue is the result of a panel organised by Erdal and Oeppen at the Royal Geographic Society/Institute of British Geographers annual conference in 2010.