@book { WrterbuchdesKonstruktivenRealismus,
    title = "Wörterbuch des Konstruktiven Realismus",
    author = "Gerhard {Klünger}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1107883"
}