@book{ 0-273925822, title = {Geschichte Frankreichs im Mittelalter}, author = {Ehlers, Joachim}, address = {Stuttgart}, publisher = {Kohlhammer}, year = {1987}, isbn = {3170098012}, language = {German}, note = {Literaturverz. S. 397 - 414}, url = {http://d-nb.info/870920928/04}, url = {https://katalog.hgb-leipzig.de/Record/0-273925822} }