@book { SocietasPrivataEuropaea,
    title = "Societas Privata Europaea",
    subtitle = "Perspektiven einer neuen supranationalen Rechtsform",
    author = "Stefanie {Steiner}",
    year = "2009",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1107292"
}