@book { DiereineUnterhaltsstiftung,
    title = "Die reine Unterhaltsstiftung",
    author = "Karl-Alexander {Neumann}",
    year = "2014",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-04671-7",
    url = "https://www.peterlang.com/document/1048487"
}