@book{Knobel+2021,
url = {https://doi.org/10.3790/9783428500642},
title = {Wandlungen im Verständnis der Vertragsfreiheit},
title = {},
author = {Ulrike Knobel},
publisher = {Duncker & Humblot},
address = {},
doi = {doi:10.3790/9783428500642},
isbn = {9783428500642},
year = {2000},
lastchecked = {2021}
}