@book { ErziehungzurMndigkeitundKantsIdeederFreiheit,
    title = "Erziehung zur Mündigkeit und Kants Idee der Freiheit",
    author = "Markus {Speidel}",
    year = "2013",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-03797-5",
    url = "https://www.peterlang.com/document/1047622"
}