1. International Organization for Migration. World Migration Report 2020. Geneva: International Organization for Migration; 2019.
2. German Federal Statistical Office. Population in private housholds by migration background and employment status [Bevölkerung in Privathaushalten nach Migrationshintergrund und Beteiligung am Erwerbsleben] 2018 [https://www.destatis.de/DE/Themen/Gesellschaft-Umwelt/Bevoelkerung/Migration-Integration/Tabellen/migrationshintergrund-beteiligung-erwerbsleben.html;jsessionid=876852F796A4BEB3069AA4C4B43B9582.internet731.
3. German Federal Statistical Office. Statistical Yearbook 2019 [Statistisches Jahrbuch 2019]. 2019.
4. Psychosocial working conditions and well-being among immigrant and German low-wage workers;A. Hoppe;Journal of occupational health psychology,2011
5. German Medical Association. Statistics of Physicians on the 31th december 2018 [Ärztestatistik zum 31. Dezember 2018] 2018.