@book { DerBesitzimFundrecht,
    title = "Der Besitz im Fundrecht",
    author = "Yajing {Cao}",
    year = "2023",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b20856",
    url = "https://www.peterlang.com/document/1338537"
}