@book { EuropischesPrivatrecht,
    title = "Europäisches Privatrecht",
    subtitle = "Die Rechtsvergleichung",
    author = "J. Michael {Rainer} and J. Michael {Rainer}",
    year = "2007",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1102711"
}