@book { DerEierkrieg,
    title = "Der Eierkrieg",
    author = "Edith {Parzefall} and Kathrin {Brückmann} and Hannah {Böving}",
    year = "2021",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1158263"
}