@book { CorporateGovernanceinDeutschlandundSpanien,
    title = "Corporate Governance in Deutschland und Spanien",
    author = "Bettina {Janka}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1108203"
}