@book { AntonMengerRechtundSozialismus,
    title = "Anton Menger- Recht und Sozialismus",
    author = "Hans {Hörner}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1070262"
}