@book { WasistFortschritt,
    title = "Was ist Fortschritt?",
    subtitle = "Herausgegeben von Maja Svilar",
    author = "Maja {Svilar}",
    year = "1979",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1113010"
}