@book { EheundFamilienschutzinZeitendesdemografischenWandels,
    title = "Ehe und Familienschutz in Zeiten des demografischen Wandels",
    author = "Patric {Kra}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    doi = "10.3726/b18223",
    url = "https://www.peterlang.com/document/1062248"
}