@book { Zukunftsfhigkeitgestalten,
    title = "Zukunftsfähigkeit gestalten",
    author = "Christian {Müller-Espey}",
    year = "2020",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b15739",
    url = "https://www.peterlang.com/document/1111029"
}