@book { DergeschlosseneImmobilienLeasingFonds,
    title = "Der geschlossene Immobilien-Leasing-Fonds",
    author = "Cord {Lauenstein}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1093817"
}