Badenhoop, Elisabeth Ethics, Law and Politics, MPI for the Study of Religious and Ethnic Diversity, Max Planck Society;
https://www.cambridge.org/core/books/abs/states-of-ignorance/imperfect-control/873CD0A09095B80131D0156D4AB1E66F (Publisher version)
Badenhoop, E. (2023). (Im)perfect control: The history of the German foreigners' registry. In C. Boswell, & E. Chabal (Eds.), States of ignorance: governing irregular migrants in Western Europe (pp. 117-139). Cambridge: Cambridge University Press. doi:10.1017/9781009410199.005.