@book { SchwedischerSommer,
    title = "Schwedischer Sommer",
    author = "Karin B. {Holmqvist} and Annika {Krummacher}",
    year = "2019",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://m.dotbooks.de/document/435105"
}