@book { DieStiftung,
    title = "Die Stiftung",
    subtitle = "Jahreshefte zum Stiftungswesen- 3. Jahrgang / 2009",
    author = "Bernd {Andrick} and Gerd {Hellmig} and Axel {Janitzki} and Karlheinz {Muscheler}",
    year = "2009",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-05107-0",
    url = "https://www.peterlang.com/document/1054184"
}