@book { DiepraktischeRelevanzdessokratischenPrinzips,
    title = "Die praktische Relevanz des sokratischen Prinzips",
    author = "Hans {Lissy}",
    year = "1980",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1071894"
}