context: With Heinz Stoob she received her doctorate at the University of Münster in 1986 with a thesis on the rule of travel Karls IV. south of the Alps.
source: From 1989 to 1995 Widder was scientific assistant at the University of Münster.
reference_original: Dal 1989 al 1995, Widder fu assistente scientifica presso l'Università di Münster.
reference_flipped: Dal 1989 al 1995, Widder fu assistente scientifico presso l'Università di Münster.