@book { EmpraktischeVernunft,
    title = "Empraktische Vernunft",
    author = "Volker {Caysa}",
    year = "2015",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-06212-0",
    url = "https://www.peterlang.com/document/1049700"
}