@book { DasBetreuungsrechtiminternationalenPrivatrecht,
    title = "Das Betreuungsrecht im internationalen Privatrecht",
    author = "Elisabeth {Nitzinger}",
    year = "1999",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1087997"
}