CIES e-Working Paper N.º 197/2014 Mapping the Return Migration Research Field David Cairns, CIES-IUL João Sardinha, Open University of Lisbon Nina Clara Tiesler, Leibniz Universität Hannover CIES e-Working Papers (ISSN 1647-0893) Av. das Forças Armadas, Edifício ISCTE, 1649-026 LISBOA, PORTUGAL, cies@iscte.pt