@book { HrtaufInnovationstheaterzuspielen,
    title = "Hört auf, Innovationstheater zu spielen!",
    author = "Jean-Philippe {Hagmann}",
    year = "2018",
    publisher = "Vahlen",
    address = "München, Deutschland",
    url = "https://vahlen.openpublishing.com/document/1221288"
}