@book { DienachtrglicheSicherungsverwahrung,
    title = "Die nachträgliche Sicherungsverwahrung",
    author = "Annika {Flaig}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1106478"
}