Migration and transnationalism between Switzerland and Bulgaria - Richter, Marina; Richter, Marina; Ruspini, Paolo; Ruspini, Paolo; Mihailov, Dotcho; Mihailov, Dotcho; Minčev, Veselin; Minčev, Veselin; Nollert, Michael 1960-; Nollert, Michael 1960- (Springer International Publishing, 2017)