@book { SchenkkreiseimLichtedes817S2BGB,
    title = "Schenkkreise im Lichte des § 817 S. 2 BGB",
    author = "Cathrin {Kefalas}",
    year = "2013",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-02646-7",
    url = "https://www.peterlang.com/document/1046087"
}