@book { DieEisbrinBergmannundKleinermittelnDerersteFall,
    title = "Die Eisbärin: Bergmann und Klein ermitteln – Der erste Fall",
    author = "Matthias {Gereon}",
    year = "2013",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    doi = "10.3239/9783955201869",
    url = "https://m.dotbooks.de/document/211017"
}