@book { DieMinisteranrufungnach21Abs4S3DSchGNW,
    title = "Die Ministeranrufung nach § 21 Abs. 4 S. 3 DSchG NW",
    author = "Monika {Oberhansberg}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1097868"
}