@book { GrenzenderVersicherbarkeit,
    title = "Grenzen der Versicherbarkeit",
    author = "Philipp {Hartmann}",
    year = "2018",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b13606",
    url = "https://www.peterlang.com/document/1068206"
}