In 1990 , she earned the Habilitation from the University of Bremen with a thesis entitled Migration und Biographie which examined the education of young Italian migrants in the Rhine - Main region of Germany .
Which affected migration studies in Germany .
In 1990 , she earned the Habilitation from the University of Bremen with a thesis entitled Migration und Biographie which examined the education of young Italian migrants in the Rhine - Main region of Germany , and which affected migration studies in Germany .