@Book{271926546,
author="Heimann, Heinz-Dieter",
title="Einf{\"u}hrung in die Geschichte des Mittelalters: Tabellen",
series="Uni-Taschenb{\"u}cher Geschichte 1957",
year="1997",
publisher="Ulmer",
address="Stuttgart",
note="Heinz-Dieter Heimann",
isbn="3800126419",
language="German"
}