@book { KriegerBauernBrger,
    title = "Krieger, Bauern, Bürger",
    subtitle = "Untersuchungen zu den Hopliten der archaischen und klassischen Zeit",
    author = "Johann Peter {Franz}",
    year = "2002",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1093698"
}