@book { LAnnaeusSeneca,
    title = "L. Annaeus Seneca",
    subtitle = "Epistulae morales- Brief 66- Einleitung, Text und Kommentar",
    author = "Erwin {Hachmann}",
    year = "2006",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1102827"
}