@book { MoorkampsFlleSammelband,
    title = "Moorkamps Fälle Sammelband",
    author = "Erin J. {Steen}",
    year = "2021",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1010367"
}