Roland VerwiebeSteffen Mau is Professor of Political Sociology and Comparative Social Research at the University of Bremen. His main fields of expertise are welfare state research, Europeanization, social inequality, transnationalization and border studies. Roland erwiebe is Professor of Social Stratification Research and Quantitative Methods at the University of Vienna, Austria. He has extensive research experience in research on social inequality, migration, labour market and Europeanization. Read More Read Less