Surveying the hard-to-survey. Refugees and Unaccompanied minors in Greece

The unprecedented migration flows that Europe has witnessed since the spring of 2015  have become the focus  of  intense public  debate and  concern,  fueling social and  political  tensions across  European  Union  (EU)  member-states and beyond. In 2015, it is estimated that 856,000 people arrived in Greece (IOM 2016a), a figure indicating that recent migration flows constitute one of the biggest population movements in recent European history