@book { DerbekannteFremde,
    title = "Der bekannte Fremde",
    author = "Oliver {Hepp}",
    year = "2016",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-06535-0",
    url = "https://www.peterlang.com/document/1050080"
}