@book { DassogenannteSupervermchtnis,
    title = "Das sogenannte Supervermächtnis",
    subtitle = "Zivil- und steuerrechtliche Probleme",
    author = "Matthias {Balkenhol}",
    year = "2024",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b21971",
    url = "https://www.peterlang.com/document/1459226"
}