@book { Nurmirganzallein,
    title = "Nur mir ganz allein",
    author = "Lotte {Kinskofer}",
    year = "2013",
    publisher = "hey! publishing",
    address = "München, Deutschland",
    doi = "10.3239/9783942822657",
    url = "https://www.heypublishing.com/document/232394"
}