@book{Lecheler+2020,
url = {https://doi.org/10.3790/9783428478057},
title = {Das Subsidiaritätsprinzip},
title = {Strukturprinzip einer europäischen Union},
author = {Helmut Lecheler},
publisher = {Duncker & Humblot},
address = {},
doi = {doi:10.3790/9783428478057},
isbn = {9783428478057},
year = {1993},
lastchecked = {2020}
}