@book { ArchitekturdesLebensDasAlter,
    title = "Architektur des Lebens – Das Alter",
    author = "Matthias {Kaufmann} and Hermann {Stefan}",
    year = "2017",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b11744",
    url = "https://www.peterlang.com/document/1110098"
}