@book { DieWikingerSagaBand1DerThorshammer,
    title = "Die Wikinger-Saga - Band 1: Der Thorshammer",
    author = "Kari {Köster-Lösche}",
    year = "2014",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://m.dotbooks.de/document/280767"
}