Diversity and contact immigration and social interaction in German cities - Schönwälder, Karen 1959-; Petermann, Sören 1970-; Hüttermann, Jörg 1962-; Vertovec, Steven 1957-; Hewstone, Miles 1956-; Stolle, Dietlind 1967-; Schmid, Katharina; Schmitt, Thomas (Palgrave Macmillan UK, 2016)