@book { DerUmgangmitRusslanddeutschenindenbeidenWeltkriegen,
    title = "Der Umgang mit Russlanddeutschen in den beiden Weltkriegen",
    author = "Nikolas {Nimptsch}",
    year = "2019",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    url = "https://www.hausarbeiten.de/document/497490"
}