@book { AlterBlickeaufdasBevorstehende,
    title = "Alter – Blicke auf das Bevorstehende",
    author = "Rainer {Kampling} and Anja {Middelbeck-Varwick}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1107082"
}