@book { 1989200920JahreUNKinderrechtskonvention,
    title = "1989-2009: 20 Jahre UN-Kinderrechtskonvention",
    author = "Sabine von {Schorlemer} and Elena {Schulte-Herbrüggen}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1135458"
}