@book
{TN_libero_mab2,
author = {
Beumann, Helmut
},
title = {
Untersuchungen zu mitteldeutschen Geschichtsquellen des hohen Mittelalters
},
publisher = {Böhlau},
year = {1970-},
booktitle = {Mitteldeutsche Forschungen ; .},
address = {
Köln
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}